# Schedule a Call - 20min with Cassia Marina

> PLEASE READ FULLY: This is a call to discover which service package is best for your needs. I will help you determine what the next BEST step is for you and answer any questions you may have about our services. Please be mindful that this is not a coaching or consulting call or a session to "pick my brain". This is simply a call to determine if we are a good fit. You only get ONE FREE discovery call, so please be mindful of my time as we respect your time and we expect the same respect in return. Phone number to call: (868)-301-1477 - WhatsApp Only

- Host: Cassia Marina
- Duration: 20 min
- Location: Phone call, Link meeting
- Host time zone: America/Port_of_Spain
- Confirmation: The host confirms each booking; it stays pending until they accept it.
- Booking page: https://cal.com/basictobranded/schedule-a-call
- Event type id: 825628

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=825628&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": 825628,
  "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.
- `location` is optional; without it the booking uses the event’s first location.
- A successful response is a pending booking request.