# Free Consulation with Landon Little

> For US-based operating businesses in manufacturing, freight and logistics, 3PL, accounting, finance, insurance, distribution, construction, professional services, and retail, with at least 20 employees and 3 or more years of business records. This call is not for sellers of research, scientific, medical, or other third-party datasets.

- Host: Landon Little
- Duration: 20 min
- Location: Google Meet
- Host time zone: Asia/Manila
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/zentarailabs/free-consulation
- Event type id: 6214398

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=6214398&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": 6214398,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "Company-website": "…",
    "What-does-your-company-do---industry": "…",
    "How-many-employees-does-your-company-have": "…",
    "How-many-years-of-business-records-do-you-still-hold": "…",
    "Where-did-you-find-this-page": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `Company-website` (Company website), `What-does-your-company-do---industry` (What does your company do? (industry)), `How-many-employees-does-your-company-have` (How many employees does your company have?), `How-many-years-of-business-records-do-you-still-hold` (How many years of business records do you still hold?), `Where-did-you-find-this-page` (Where did you find this page?)
- 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.