# Free 30-Minute PlanSwift Demo with Westimating

> Screen-share session: We'll work through a real project together. I'll show you my exact PlanSwift setup for drywall, framing & ceiling takeoffs Get customized solutions for your specific estimating challenges and workflow

- Host: Westimating
- Duration: 30 min
- Location: Cal Video
- Host time zone: America/New_York
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/westimating/free-30-minute-planswift-demo
- Event type id: 3303018

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=3303018&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": 3303018,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "bookingFieldsResponses": {
    "Language": "…",
    "Demo": "…",
    "problem": "…",
    "smsReminderNumber": "…",
    "Sales": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `Language` (Preferred language), `Demo` (Book a demo for?), `problem` (What problem you are looking to solve?), `smsReminderNumber` (Phone number (Text notifications))
- Optional fields: `Sales` (Typical Project Size), `notes` (Additional notes)
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.