n8n AI Voice Receptionist Automation

I need an n8n-based flow that turns every incoming call to my medical clinic into a smooth, AI-handled conversation. The system must pick up the phone 24/7, understand the patient’s intent in natural language, and then guide them through booking, rescheduling, or cancelling an appointment... (Budget: ₹1500 - ₹12500 INR, Jobs: AI Chatbot Development, API Integration, Automation, Google Sheets, n8n, Natural Language Processing, OpenAI, PostgreSQL)