Create a customer support voice agent with GPT-5, ElevenLabs & calendar booking

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Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

Build a Customer Support AI Voice Agent with GPT 5 and ElevenLabs Who is this for? This template is ideal for: Businesses tha...

Best for

Support Chatbot automation workflows
AI Chatbot automation workflows
intermediate n8n builders looking for reusable templates

Tools used

n8n-nodes-base.webhook, n8n-nodes-base.respondtowebhook, @n8n/n8n-nodes-langchain.agent, @n8n/n8n-nodes-langchain.toolthink, @n8n/n8n-nodes-langchain.lmchatopenai, n8n-nodes-base.googlesheetstool, n8n-nodes-base.googlecalendartool, n8n-nodes-base.gmailtool

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Dr. Firas.

Original n8n.io source

1.1 Workflow description

Title: Create a customer support voice agent with GPT-5, ElevenLabs & calendar booking
Workflow name: Create a customer support voice agent with GPT-5, ElevenLabs & calendar booking

Build a Customer Support AI Voice Agent with GPT-5 and ElevenLabs

👥 Who is this for?

This template is ideal for:

Businesses that want to provide 24/7 automated voice-based customer support
Service providers needing to schedule appointments via voice interaction
Teams looking to handle multilingual customer queries automatically
Entrepreneurs aiming to boost customer engagement without hiring large support teams

💡 What problem is this workflow solving?

Traditional customer support requires:

Human agents to answer repeated questions
Manual handling of bookings and confirmations
Limited availability outside office hours

This workflow solves those issues by combining GPT-5 intelligence with ElevenLabs voice synthesis, enabling your website visitors to:

Ask questions and receive spoken answers in multiple languages
Request appointment availability
Confirm bookings and receive automatic email confirmations

All of this happens automatically, reducing costs and ensuring consistent customer experience.

⚙️ What this workflow does

Receive customer voice input via webhook from your website
Transcribe and understand intent using GPT-5 and LangChain reasoning
Fetch information from your knowledge base (Google Sheets) for FAQs, services, or policies
Check availability in Google Calendar in real-time
Create confirmed appointments only after explicit user confirmation
Send confirmation emails with booking details via Gmail
Respond back to the user with a multilingual spoken reply using ElevenLabs

🧰 Setup

Before launching this workflow, make sure you:

Have an OpenAI API key for GPT-5
Set up an ElevenLabs account and API key for voice input/output
Enable Google Sheets API and prepare a sheet with your FAQ/knowledgebase
Enable Google Calendar API and connect your calendar for scheduling
Connect your Gmail account for booking confirmation emails
Configure the Webhook URL on your website for sending voice requests
Follow the sticky note instructions inside the workflow for final setup

🛠️ How to customize this workflow

Knowledgebase: Add or update information in your Google Sheets to cover new FAQs
Voice settings: Configure ElevenLabs voice style, tone, or supported languages
Appointment rules: Adjust event duration or add reschedule/cancellation options
Notifications: Add Slack or Telegram alerts for each new confirmed booking
Email templates: Customize the confirmation email with your brand style

With this workflow, your website becomes an AI-powered voice assistant — capable of handling customer inquiries, providing multilingual support, and managing bookings seamlessly.

📄 Documentation: Notion Guide

Need help customizing?

Contact me for consulting and support : Linkedin / Youtube

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - Webhook: Receive User Request (ElevenLabs)

Type / Role: n8n-nodes-base.webhook - webhook
Config choices: Version 2.1

Block 2 - Webhook: Return AI Response (ElevenLabs)

Type / Role: n8n-nodes-base.respondToWebhook - respondToWebhook
Config choices: Version 1.4

Block 3 - AI Agent: Multilingual Vocal Support (GPT-5)

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 2.2

Block 4 - Reasoning Tool (LangChain)

Type / Role: @n8n/n8n-nodes-langchain.toolThink - toolThink
Config choices: Version 1.1

Block 5 - OpenAI GPT-5 Model

Type / Role: @n8n/n8n-nodes-langchain.lmChatOpenAi - lmChatOpenAi
Config choices: Version 1.2

Block 6 - Knowledgebase Lookup

Type / Role: n8n-nodes-base.googleSheetsTool - googleSheetsTool
Config choices: Version 4.7

Block 7 - Calendar: Check Availability

Type / Role: n8n-nodes-base.googleCalendarTool - googleCalendarTool
Config choices: Version 1.3

Block 8 - Calendar: Create Appointment

Type / Role: n8n-nodes-base.googleCalendarTool - googleCalendarTool
Config choices: Version 1.3

Block 9 - Gmail: Send Booking Confirmation

Type / Role: n8n-nodes-base.gmailTool - gmailTool
Config choices: Version 2.1

Block 10 - Sticky Note

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 11 - Sticky Note1

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 12 - Sticky Note2

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

3. Summary Table

Workflow	Create a customer support voice agent with GPT-5, ElevenLabs & calendar booking
Complexity	intermediate
Nodes	12
Categories	Support Chatbot, AI Chatbot
Author	Dr. Firas
Published	31 Aug 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/8074/8074.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source Support Chatbot workflows AI Chatbot workflows

Frequently asked questions

What does Create a customer support voice agent with GPT-5, ElevenLabs & calendar booking do?

Build a Customer Support AI Voice Agent with GPT 5 and ElevenLabs Who is this for? This template is ideal for: Businesses tha...

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your Support Chatbot, AI Chatbot use case.

Dr. Firas

51 workflows

Nodes

n8n-nodes-base.webhook n8n-nodes-base.respondtowebhook @n8n/n8n-nodes-langchain.agent @n8n/n8n-nodes-langchain.toolthink @n8n/n8n-nodes-langchain.lmchatopenai n8n-nodes-base.googlesheetstool n8n-nodes-base.googlecalendartool n8n-nodes-base.gmailtool

Complexity

intermediate

Published 31 Aug 2025

Likes 0

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Install path: /data/workflows/8074/8074.json

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Create a customer support voice agent with GPT-5, ElevenLabs & calendar booking

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

Build a Customer Support AI Voice Agent with GPT-5 and ElevenLabs

👥 Who is this for?

💡 What problem is this workflow solving?

⚙️ What this workflow does

🧰 Setup

🛠️ How to customize this workflow

Need help customizing?

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Webhook: Receive User Request (ElevenLabs)

Block 2 - Webhook: Return AI Response (ElevenLabs)

Block 3 - AI Agent: Multilingual Vocal Support (GPT-5)

Block 4 - Reasoning Tool (LangChain)

Block 5 - OpenAI GPT-5 Model

Block 6 - Knowledgebase Lookup

Block 7 - Calendar: Check Availability

Block 8 - Calendar: Create Appointment

Block 9 - Gmail: Send Booking Confirmation

Block 10 - Sticky Note

Block 11 - Sticky Note1

Block 12 - Sticky Note2

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions