# For D2C brands losing sales and not sure why. with Marketingko

> 30 minute call for D2C brands losing sales and not sure where or why. We'll look at your sales process, find the drop-off points, and figure out if AI automation can fix them. You leave with a clear next step either way.

- Host: Marketingko
- Duration: 30 min
- Location: Google Meet
- Host time zone: Asia/Kolkata
- Confirmation: The host confirms each booking; it stays pending until they accept it.
- Booking page: https://cal.com/marketingko/d2c
- Event type id: 6499338

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=6499338&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": 6499338,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "attendeePhoneNumber": "…",
    "title": "…",
    "What-s-your-monthly-revenue-range": "…",
    "notes": "…",
    "aiAgentCallPhoneNumber": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `attendeePhoneNumber` (Mobile number (Whatsapp preferred)), `title` (What's your website or social media links?), `What-s-your-monthly-revenue-range` (What's your monthly revenue range?), `notes` (What have you already tried to fix this?), `aiAgentCallPhoneNumber` (Phone number (for our agent to call))
- Optional fields: `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.
- A successful response is a pending booking request.