My goal is to launch an AI-driven phone system that greets incoming callers in natural language, finds out what they need, and then: • answers general questions about our services, • books, reschedules, or cancels appointments directly in our calendar, • handles basic customer-support requests (updates, reminders, follow-ups). I’m open to whichever stack you feel is most efficient—whether you prefer a low-code workflow with Make.com, a self-hosted n8n scenario, or custom Claude code that taps into telephony APIs such as Twilio or Plivo. The key is near real-time voice interaction, reliable intent detection, and secure hand-off to our existing booking database (Google Calendar, Outlook, or a simple SQL store—happy to adapt). Please walk me through the architecture you would choose, why it suits live voice calls, and how you would tackle authentication for sensitive changes like cancelling an appointment. A short demo clip or link to a previous conversational-IVR or voicebot you have built will help me gauge fit quickly. Deliverables I’d like to see: 1. A working proof-of-concept reachable by phone. 2. Source (flows, scripts, or code) with clear setup notes. 3. Brief handover call and doc covering maintenance and future feature hooks. If you have rolled out something similar—AI receptionists, automated booking agents, or voice-enabled help desks—those stories will carry weight. Let me know your timeline and any external services or subscriptions I’ll need so I can budget accordingly.