# Free Discovery Call with Christina Olsen with Christina Olsen

> Welcome! I am excited to speak with you. I’m the founder of Brightsol, a holding company for multiple brands. To make our discovery call as valuable as possible, please let me know the main purpose of the call and what you are looking to accomplish. This is so I can come prepared to be as helpful to you as possible. So much love & gratitude from me to you. Love, Christina Olsen

- Host: Christina Olsen
- Duration: 15 min
- Location: Google Meet
- Host time zone: America/Chicago
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/christina-olsen-uwbd4k/15min
- Event type id: 4820214

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=4820214&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": 4820214,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "title": "…",
    "attendeePhoneNumber": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `title` (What is this meeting about?)
- Optional fields: `attendeePhoneNumber` (Phone number), `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.