Telegram Booking Reply Workflow with Gemini, Calendar & Sheets

Automatically book Telegram appointments with Gemini + Google Calendar (and notify you when a human is needed)

Meet a Telegram Booking Reply workflow for n8n that answers incoming messages with a Gemini agent, checks real availability in Google Calendar, books confirmed times, logs every interaction to Google Sheets, and alerts you in Telegram for human handoff when required.

What this workflow does

• Triggers on new Telegram messages sent to your Telegram bot.
• Loads your business settings (business name, default language, knowledge text such as hours/services/prices/policies, appointment length, and your owner Telegram chat ID) and starts a Gemini conversation with 12-turn conversation memory.
• Handles booking requests: when a customer asks to book, the agent checks availability in Google Calendar and creates an event after the customer confirms a time.
• Logs interactions to Google Sheets in a CRM-style entry including: Time, Customer, Message, Outcome, and whether Needs Human is true.
• Sends the customer reply in Telegram and notifies the owner in Telegram whenever the agent flags the conversation for human follow-up.

Use cases

• Small businesses that receive booking questions via Telegram and want automated scheduling.
• Service providers (consulting, appointments, on-site services) needing consistent policies (hours, pricing, rules) delivered by the Gemini agent.
• Teams using n8n to centralize conversation → scheduling → logging without losing oversight.

Technical details

• Telegram: incoming message trigger + customer/owner notifications.
• Google Gemini: n8n n8nn8n-nodes-langchainagent with business-context settings and 12-turn memory.
• Google Calendar: availability checks and event creation.
• Google Sheets: CRM-style logging of Time, Customer, Message, Outcome, Needs Human.
• Workflow logic uses nodes such as if, set, and code (including removing the internal handoff token from the customer reply).

Get reliable Telegram booking automation with real calendar scheduling, complete audit logs, and clear human handoff—built for n8n.