Rex ChangGenAI & Cloud Solution Architect / Program LeadView portfolio ↗
RC

Voice intake agent

Routine customer calls handled by AI. Your team gets the hours back.

Every inbound call pulls someone away from higher-value work.

  1. Calls get missed.Busy hours and after hours go to voicemail, and the customer goes elsewhere.Fix: The agent picks up every call, captures the request and checks your systems.
  2. Staff time goes on routine calls.Skilled people spend hours taking down the same details instead of selling or solving problems.Fix: Your team starts from a complete record and spends its time where it matters.
  3. Customers repeat themselves.When a specialist follows up, they ask the same questions again.Fix: Complex or sensitive requests are flagged for human review with every detail captured.
Try it liveHow it's built

See it work

Hear the voice AI agent handle two real calls.

Scenario: a travel agency’s phone line. The agent takes the enquiry; people step in only when needed.

Play a call, or jump to a stage.

Sample call — Happy Path

A routine enquiry. The agent collects the trip details and checks availability. Your team receives a complete lead without picking up the phone.

Follow the call

  1. 1 · Caller gives the budget 1:34

    “Yeah, I would say around 4K US dollar in total.”

  2. 2 · Agent checks availability 1:51✓check_trip_availability
  3. 3 · Saved record
    caller
    Rex
    destination
    Barcelona
    dates
    second week of October
    party
    two
    budget
    four thousand US dollars
    trip type
    cultural
    next step
    availability_confirmed_logged

Sample call — Escalation

Too complex for a standard package. The 12-person request is flagged for specialist review, with destination and dates already captured.

Follow the call

  1. 1 · Caller speaks 0:40

    “It’s a group of 12 of us, a few families traveling together.”

  2. 2 · Agent flags for review 0:47

    “For a group of twelve, our specialists design the itinerary… I’ve got your destination and dates already, so they can start from there.”

    ✓check_trip_availability
  3. 3 · Saved record
    caller
    Jonathan
    destination
    Rome
    dates
    April
    party
    12
    next step
    escalated_to_specialist

Try it live

Talk to the agent yourself.

Play the caller. Ask about a trip of your own: try a simple request, then a complex one, and see when it flags the request for human review.

Travel concierge demo

Ready when you are

AI demo · Audio and transcript are recorded and stored for review. The demo page ends the session after 3 minutes. Use fictional details. No real bookings.

Listen to the sample calls ↑

Under the hood

Availability comes from your systems, not AI guesswork.

  1. CallerBrowser or phone
  2. Voice agentPrompt and hand-off rulese.g. ElevenLabs
  3. Tool callFixed JSON schema
  4. WebhookAvailability lookup, logginge.g. Apps Script
  5. RecordOne row per calle.g. Google Sheet, any CRM
// what the agent sends to the webhook
POST /webhook  check_trip_availability
{
  "caller_name": "Rex",
  "destination": "Barcelona",
  "travel_dates": "second week of October",
  "party_size": "two",
  "budget_range": "four thousand US dollars",
  "trip_type": "cultural",
  "recommended_next_step": "availability_confirmed_logged"
}
  • Every call becomes a clean record.A fixed structure your CRM can use, not a transcript someone has to read.
  • No made-up availability.What the agent says about availability comes from the tool response, not the model.
  • Simple calls handled, sensitive ones flagged.The agent captures routine requests; riskier or sensitive ones are flagged for human review with full context.

Trade-off: the agent closes fewer calls on its own, but the availability it quotes comes from your systems.

Tested

Tested on the calls that trip agents up.

  • Standard intake
  • Off-topic redirect
  • Tool failure
  • Asks for a human
  • Hand-off after details
Escalation · tool request Happy path · tool request Saved log
Working in this demo
  • AI voice agent with hand-off rules
  • Availability tool on a live webhook (mock data)
  • Structured call log
  • Specialist hand-off flag
Add-ons for your setup
  • Phone lineConnect a real number, e.g. via Twilio. One-click setup.
  • Your booking systemReplace the mock data behind the same availability tool.
  • Team alertsSend hand-offs straight to your CRM or team inbox.

Related lab: how voice-agent hand-offs behave across two platforms, on GitHub ↗ · a separate build comparing ElevenLabs and OpenAI Realtime

Next

Hand routine calls to AI. Keep the ones that matter.

I can scope a pilot around your inbound calls: customer service, sales or bookings. Hiring? Happy to walk you through how this was built.

Let’s talk →rex@rexchang.dev