# VIP DAY with Billy

> 6-Hour Strategic Transformation VIP Day Transform your biggest challenges into breakthrough strategies in one intensive day. Get fresh perspective on familiar problems, extract hidden frameworks from your expertise, and get clear implementation assistance so that you leave with something that actually works. What's Included: 6 hours of strategic problem-solving and solution design Pattern recognition analysis of your current approaches Framework extraction from your existing expertise Implementation roadmap and assistance with clear action steps Comprehensive strategy document (delivered within 1 week) 30-day integration support with two follow-up calls Perfect for: Entrepreneurs and leaders ready to systematize their success, optimize what's working, design strategies for their next level of growth, and want assistance in getting started. Result: You'll leave with clarity on your path forward, systems to scale your expertise, a strategic roadmap you can actually execute, and completed deliverables.

- Host: Billy
- Duration: 360 min
- Location: Zoom Video
- Host time zone: America/Chicago
- Confirmation: Bookings are confirmed instantly.
- Payment: required, and collected on the booking page.
- Booking page: https://cal.com/askbilly/full-vip-day
- Event type id: 3106903

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=3106903&start=YYYY-MM-DD&end=YYYY-MM-DD&timeZone=<IANA time zone>
cal-api-version: 2024-09-04
```

The response is `{"data":{"YYYY-MM-DD":[{"start":"<ISO 8601 with offset>"}]}}`; no API key is needed.

## Book

```http
POST https://api.cal.com/v2/bookings
cal-api-version: 2026-02-25
Content-Type: application/json

{
  "eventTypeId": 3106903,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "attendeePhoneNumber": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `attendeePhoneNumber` (Phone number)
- Optional fields: `notes` (Additional notes), `guests` (Add guests)
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.