Telegram Booking & Support Bot with Gemini + Google Calendar (n8n)

Automate Telegram bookings & customer support with Gemini + Google Calendar in n8n

Turn incoming Telegram messages into instant replies, FAQ/price answers, and Google Calendar appointments—powered by Google Gemini and built for n8n automation engineers and SaaS teams.

What this workflow does

• Telegram Trigger: The workflow starts when a new message is received in Telegram.
• AI-powered conversation: It extracts the Telegram chat ID, message text, and sender name, then sends them to a Gemini-powered agent with short-term conversation memory.
• Intent-based handling: Depending on the user’s request, the agent either:
  • Checks availability in Google Calendar and creates a calendar event after the user confirms a time, or
  • Searches Google Sheets for FAQ/pricing content and drafts a concise answer.
• Replies back on Telegram: The AI-generated response is sent to the customer, with internal tags removed from what the user sees.
• Owner notifications: When an appointment is created, the business owner is notified via Telegram with customer details; if the message indicates a complaint or human support is needed, the owner receives an alert with the message details.

Use cases

• Let customers book appointments directly from Telegram without back-and-forth.
• Answer common questions about services and pricing using a Google Sheets document.
• Escalate complaints or support requests to a human via Telegram notifications.

Technical details (n8n integrations & nodes)

• Telegram Trigger and Telegram node for incoming/outgoing messages
• n8n-nodes-langchainagent with a Google Gemini AI agent (short-term memory)
• Google Calendar OAuth2 for availability checks and event creation
• Google Sheets OAuth2 for FAQ/pricing lookups
• Logic nodes such as if and set (plus workflow UI elements like Sticky Note)

Setup essentials

• Connect Telegram credentials and enable the Telegram Trigger.
• Add Google Calendar OAuth2 access and confirm the correct calendar (e.g., primary).
• Add Google Sheets OAuth2 access for your FAQ/pricing data.