# Revenue Diagnostic call (1h) with Xi Weng

> Sales is hard. Let me help. Are you stuck on a deal that you can't get to close? Running out of ways to build pipeline? Or just need some help with doing Founder Led Sales better? Hi, I'm Xi - I've been in B2B SaaS and tech sales since 2010 and now I help Founders like you get better revenue outcomes. Let's talk if you're stuck with any sales challenge. I promise to give you practical actions from my time in the trenches, and not just sales fluff.

- Host: Xi Weng
- Duration: 60 min
- Location: Google Meet
- Host time zone: Europe/London
- Confirmation: Bookings are confirmed instantly.
- Payment: required, and collected on the booking page.
- Booking page: https://cal.com/projectrevenue/revenuediagnostic
- Event type id: 4407220

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=4407220&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": 4407220,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address)
- 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.