Built a complete AI voice agent using Twilio + n8n

I recently finished building an AI receptionist voice agent for appointment-based businesses, I’m excited to share a demo of the bot in action so you can actually hear the interaction.

🔹 Overview

Customer calls a business number (Twilio handles the call).

AI voice bot greets them → guides them through booking/rescheduling.

Data flows through n8n, where it connects with Google Sheets + Google Calendar + Email/SMS services.

🔹 Flow Breakdown

Twilio Studio – Call comes in → greeting message → “press 1 to book, press 2 to reschedule.”

n8n Workflow – Captures the input → checks availability → logs everything in Google Sheets.

Calendar Integration – Confirms slot in Google Calendar and prevents double booking.

Notifications – Sends SMS/Email confirmation instantly to the customer.

Rescheduling flow – If the caller presses 1 or 2, it re-checks availability, updates the sheet, and syncs the change back to Calendar + sends new confirmation.

🔹 Why it’s useful

Acts like a 24/7 receptionist (no missed calls).

Cuts down on manual work (no staff needed for scheduling).

Reduces no-shows with reminders.

🎧 Demo Video

I’ve attached a sample interaction so you can hear how the bot responds in real-time.

Would love your feedback on the voice flow — and curious to hear where you think something like this could be most useful.

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