01 · Admissions Advisory for Live Wellness & Yoga Education Client15+ INBOUND LEADS CONVERTED

PRODUCTION VOICE AI CALLING AGENT

Inbound & Outbound Conversational Telephony with Live CRM & Booking Integration

ElevenLabsLangChainPythonREST APIsHubSpot CRMGoogle CalendarWebhooks

01 / THE CORE BOTTLENECK

Inbound Lead Friction & Time-to-Call

Prospective international students calling the admissions line frequently hit voicemail due to global time zone differences, causing high-intent leads to drop off before speaking with an advisor.

02 / THE ARCHITECTURAL FIX

Modular Realtime Speech Pipeline

Engineered an end-to-end Voice AI architecture using ElevenLabs conversational voice synthesis, LangChain state machine logic, live CRM contact creation in HubSpot, and real-time appointment booking.

KEY ARCHITECTURAL ELEMENTS:

—ElevenLabs Conversational Voice API with ultra-low latency voice streaming

—LangChain conversation state manager with strict deterministic fallback safety

—Webhook routing via Python FastAPI backend for CRM syncing and lead enrichment

—HubSpot CRM bi-directional contact updating with full transcript and lead score

—Google Calendar / Cal.com real-time slot verification and reservation confirmation

03 / VERIFIED BUSINESS OUTCOMES

Defensible Operational Returns

15+ inbound leads converted directly through the automated conversational system

24/7 coverage for international US/UK inquiries without staffing night shifts

Zero dropped calls during marketing campaign spikes

Average latency under 1.8 seconds, maintaining natural conversational cadence