Automated Appointment Booking via WhatsApp

# AI assistant on WhatsApp books appointments and sends SMS reminders 2 hours prior

This automation handles client appointment booking via WhatsApp using an AI assistant powered by GPT-4o and LangChain. Once confirmed, it reserves time in Cal.com, logs data to Google Sheets, and sends an automated SMS reminder 2 hours before the meeting. The entire process runs autonomously 24/7.

## Who it´s for
- Coaches and consultants automating client intake without manual involvement.
- Small business owners using WhatsApp as their primary communication channel.
- Freelancers offering online services who want to reduce administrative overhead.
- Support teams needing to integrate an AI assistant with calendar and SMS notifications.

## What the automation does
- Receives incoming messages from WhatsApp via HTTP webhook.
- Engages users in a conversational flow using an AI assistant to collect name, email, service type, and preferred time.
- Checks availability via Cal.com API and books the selected slot.
- Logs client details and booking status into Google Sheets.
- Runs hourly cron checks to identify upcoming meetings and triggers SMS reminders via SMS77 2 hours in advance.
- Supports conversation reset via the command "RESET", preserving context using sessionKey.

## What´s included
- Ready-to-use n8n workflow with AI dialogue and booking logic.
- Trigger logic for WhatsApp messages and hourly scheduled checks.
- Integrations with WhatsApp, Google Sheets, Cal.com, SMS77, and OpenAI (GPT-4o).
- Basic setup and adaptation guide.

## Requirements for setup
- n8n instance with HTTP webhook access.
- WhatsApp Business number with API configured (e.g., Cloud API).
- Cal.com account with API key.
- Google Sheets project for data logging.
- SMS77 account for SMS delivery.
- OpenAI API key for GPT-4o via LangChain.

## Benefits and outcomes
- Fully automated appointment booking without human intervention.
- Reduced no-shows thanks to timely SMS reminders.
- Improved customer experience with instant responses and flexible scheduling.
- Centralized data storage in Google Sheets for tracking and reporting.
- Scalable solution handling unlimited clients on the same template.
- 24/7 operation across time zones.

## Important: template only
Important: you are purchasing a ready-made automation workflow template only. Rollout into your infrastructure, connecting specific accounts and services, 1:1 setup help, custom adjustments for non-standard stacks and any consulting support are provided as a separate paid service at an individual rate. To discuss custom work or 1:1 help, contact via chat