Voice Assistant to Calendar Booking Automation

(Retell AI + GoHighLevel + n8n)

Turn phone calls into confirmed calendar appointments—automatically. This plug-and-play automation setup lets your AI voice agent check your GoHighLevel calendar availability and book appointments in real-time, no manual effort needed.

Perfect for businesses using voice AI to qualify leads and want to instantly convert interest into booked calls.

⚙️ What This Automation Bundle Does:

1. Check Calendar Availability in GoHighLevel

➤ Automatically scans your GHL calendar for open time slots based on custom parameters.

➤ Helps your voice assistant offer only valid booking times.

2. Book Appointments from Retell Calls

➤ When a user interacts with your Retell voice AI, the system collects key details and sends a booking request to GoHighLevel.

➤ Converts phone interactions into scheduled meetings without human input.

🧠 Tools Used:

• ✅ GoHighLevel Calendar API

• ✅ Retell Voice AI

• ✅ n8n Workflow Automation

• ✅ Webhook + HTTP Request Nodes

• ✅ JSON + Data Mapping Utilities

🎯 Who This Is For:

• Voice AI startups building smart booking flows

• Agencies using Retell or Twilio-based voice agents

• Consultants and coaches using GoHighLevel

• SaaS tools integrating phone + calendar booking

• Anyone tired of back-and-forth scheduling

📦 What You’ll Get:

• ✅ Two ready-to-import JSON workflows for n8n

• ✅ Retell to GHL appointment flow

• ✅ GHL calendar availability checker

• ✅ Fully editable and extendable logic

• ✅ Setup instructions and credential notes

⚡ Use-Cases:

• Turn phone leads into GHL appointments in 60 seconds

• Offer available time slots via AI voice calls

• Automate appointment scheduling for high-ticket sales calls

• Use voice agents for calendar scheduling in local businesses