# Your course breakthrough session with Kristina Azarenko Sparks

> This is the perfect option for you if you need specific help with your existing course or a course you're launching soon. After generating over $1M in digital products as an expert, I've learned a lot. I'll be happy to help you with your next course/program launch. Things I’ve tried over the past 4 years as an expert-turned-course creator: Live sales webinars Pre-recorded webinar funnels Flash sales Email funnels Pre-selling and pre-launching Black Friday sales Increasing customer lifetime value with upsells and bump offers

- Host: Kristina Azarenko Sparks
- Duration: 45 min
- Location: Cal Video, Google Meet, Zoom Video
- Host time zone: America/Toronto
- Confirmation: Bookings are confirmed instantly.
- Payment: required, and collected on the booking page.
- Booking page: https://cal.com/azarchick/breakthrough
- Event type id: 4801413

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=4801413&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": 4801413,
  "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.