// Case Study
A GPT-4o-mini LangChain agent on Telegram qualifies B2B leads, handles objections across 15 AI service types, and books Google Calendar meetings with Meet links, with no human in the loop.
The problem
Most B2B leads reached out after hours and got no response. Sales spent most of its time on repetitive qualification rather than closing, and scheduling coordination wasted hours every day.
Manual response delays meant leads slipped to faster competitors before anyone replied. The team needed instant, always-on qualification that could book meetings on its own.
A single Telegram bot in n8n that reasons, qualifies, and schedules end to end.
A GPT-4o-mini LangChain tool-calling agent runs the conversation, with 10-message memory per chat so context carries across the exchange.
A large system prompt encodes 15+ AI employee types, each with capabilities and ideal customers, plus 30+ platforms the agent can speak to accurately.
Direct information responds concisely and immediately; lead qualification collects name, company, challenge, and timeline; meeting scheduling drives the booking.
Once date, time, and email are collected the agent calls Google Calendar to create an event with a Meet link and sends a Gmail confirmation automatically.
Response time cut from hours to a 2-5 second reply, with full weekly coverage.
Meeting conversion increased substantially once every lead got an instant, qualified reply.
Qualification handled automatically so the team focuses on closing, not first-touch triage.
Scheduling handled end to end with a Google Calendar event, Meet link, and Gmail confirmation.
Objections handled across 15+ AI service types from a single knowledge-rich system prompt.
10-message memory per chat keeps every conversation contextual and consistent.
Built with
AI Automation / US
An n8n voice receptionist handling the full appointment lifecycle with Cal.com, from inbound call to rescheduling and cancellations.
Healthcare / US
Two n8n workflows replacing the SDR function, with dynamic scheduling and GPT post-call triage routing warm leads automatically.
Pet Services / Canada
A Twilio and OpenAI SMS chatbot booking pet-grooming appointments 24/7 in a natural text thread, no app or form required.
// Free Audit
Book the audit. Thirty minutes. Free.