Descriptions:
This tutorial by Zubair Trabzada walks through building a fully automated voice AI appointment system for local businesses using Google AI Studio (Gemini), n8n, and Retell AI with GPT Realtime. The demo starts with a live phone call: a visitor submits a consultation form on a medical spa website, an n8n webhook fires within seconds, and Retell AI places an outbound call that handles natural conversation — confirming interest, negotiating appointment times, and collecting contact details — all without human intervention.
The build covers three layers: generating a professional spa website using Gemini’s vibe-coding interface with a single natural language prompt; configuring an n8n workflow to receive the webhook payload and trigger the Retell AI API call; and logging all lead data to Google Sheets as a lightweight CRM. Trabzada provides free n8n JSON templates and system prompts through his community, making the system straightforwardly reproducible.
The practical framing targets AI freelancers and agency owners who want a ready-to-sell product for service businesses — spas, dental clinics, contractors — that miss inbound leads. Viewers learn how to wire a frontend, automation backend, and voice agent into a deployable client-facing system using entirely no-code and low-code tooling.
📺 Source: Zubair Trabzada | AI Workshop · Published January 12, 2026
🏷️ Format: Hands On Build
