Automated reservation system with Telegram, Google Gemini AI, and Google Sheets

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Important notice

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

1. Workflow Overview

What It Is SmartReserve is a flexible, automated Telegram chatbot built in n8n that allows users to request and confirm reservations for any kind of resource—training sessions, equipment, appoin...

Best for

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

Tools used

n8n-nodes-base.telegramtrigger, @n8n/n8n-nodes-langchain.lmchatgooglegemini, n8n-nodes-base.googlesheetstool, n8n-nodes-base.gmailtool, n8n-nodes-base.telegram, @n8n/n8n-nodes-langchain.agent, n8n-nodes-base.aitransform, @n8n/n8n-nodes-langchain.memorypostgreschat

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: Automated reservation system with Telegram, Google Gemini AI, and Google Sheets
Workflow name: Automated reservation system with Telegram, Google Gemini AI, and Google Sheets

💡 What It Is

SmartReserve is a flexible, automated Telegram chatbot built in n8n that allows users to request and confirm reservations for any kind of resource—training sessions, equipment, appointments, event slots, or more. It connects with Google Sheets for live availability tracking and automatically sends confirmation emails to your users.

⚙️ How It Works

Telegram Chatbot Interface Users interact with a friendly bot to submit their reservation request. The bot collects:

Date

Name

Resource / Service

Start Time & End Time

Final confirmation All in one seamless message.

Conflict-Free Booking System The bot checks your existing reservation sheet to avoid time overlaps before confirming.

Google Sheets Integration Two spreadsheets are used:

Resource Info: Define available services, resources, or assets.

Reservation Log: Store confirmed reservations in structured rows.

Confirmation via Email Once a reservation is accepted, the bot sends a detailed confirmation email to the user.

🚀 Setup Steps

Import the n8n Workflow

Use the provided .json template inside your n8n workspace.

Create Your Google Sheets

Sheet 1: Resource Info (e.g., rooms, courts, sessions, etc.)

Sheet 2: Reservation Log with these headers:

Set Telegram Bot Token

Create a Telegram bot and paste the token into n8n credentials.

Connect Google Sheets

Add your Google account to n8n and allow spreadsheet access.

Customize for Your Use Case

Rename “Resource” to anything (e.g., Room, Coach, Equipment).

Edit confirmation text and branding inside the “Set” and “Email” nodes.

Go Live!

Enable the workflow, and you’re ready to accept real-time reservations.

📦 What You Get

✅ One-click Telegram reservation system

✅ Conflict checker with Google Sheets

✅ Auto email confirmation

✅ User-friendly one-shot data collection

✅ Fully editable & extendable workflow

✅ Future updates and support options

🙋 Need Help Setting It Up?

If you'd like help customizing or deploying this workflow, I offer quick setup assistance and extended support.📧 Contact: [email protected] 💬 Whatsapp: +201061803236 Whether you're setting it up for your team, your club, or your business—I’m here to help!

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 - Telegram Trigger

Type / Role: n8n-nodes-base.telegramTrigger - telegramTrigger
Config choices: Version 1.2

Block 2 - Google Gemini Chat Model

Type / Role: @n8n/n8n-nodes-langchain.lmChatGoogleGemini - lmChatGoogleGemini
Config choices: Version 1

Block 3 - court info

Type / Role: n8n-nodes-base.googleSheetsTool - googleSheetsTool
Config choices: Version 4.6

Block 4 - Gmail

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

Block 5 - Telegram

Type / Role: n8n-nodes-base.telegram - telegram
Config choices: Version 1.2

Block 6 - AI Agent

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 1.9

Block 7 - Google Sheets

Type / Role: n8n-nodes-base.googleSheetsTool - googleSheetsTool
Config choices: Version 4.6

Block 8 - Prepare Prompt

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

Block 9 - Postgres Chat Memory

Type / Role: @n8n/n8n-nodes-langchain.memoryPostgresChat - memoryPostgresChat
Config choices: Version 1.3

Block 10 - Sticky Note

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

3. Summary Table

Workflow	Automated reservation system with Telegram, Google Gemini AI, and Google Sheets
Complexity	intermediate
Nodes	10
Categories	Support Chatbot, AI Chatbot
Author	Tharwat Mohamed
Published	29 Jun 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/5454/5454.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 Automated reservation system with Telegram, Google Gemini AI, and Google Sheets do?

What It Is SmartReserve is a flexible, automated Telegram chatbot built in n8n that allows users to request and confirm reservations for any kind of resource—training sessions, equipment, appoin...

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.

Tharwat Mohamed

6 workflows

Nodes

n8n-nodes-base.telegramtrigger @n8n/n8n-nodes-langchain.lmchatgooglegemini n8n-nodes-base.googlesheetstool n8n-nodes-base.gmailtool n8n-nodes-base.telegram @n8n/n8n-nodes-langchain.agent n8n-nodes-base.aitransform @n8n/n8n-nodes-langchain.memorypostgreschat

Complexity

intermediate

Published 29 Jun 2025

Likes 0

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Install path: /data/workflows/5454/5454.json

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Automated reservation system with Telegram, Google Gemini AI, and Google Sheets

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Telegram Trigger

Block 2 - Google Gemini Chat Model

Block 3 - court info

Block 4 - Gmail

Block 5 - Telegram

Block 6 - AI Agent

Block 7 - Google Sheets

Block 8 - Prepare Prompt

Block 9 - Postgres Chat Memory

Block 10 - Sticky Note

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