# Improver/Advanced Learner Private Sewing Lesson with Grace Barrett

> A friendly, hands-on private session for improver and advanced learners. You can keep learning beyond the beginner stage with Grace in a one-to-one setting. Usually, this means creating real garments. A lesson is often part of a larger sewing course designed for each individual student. This will be held at the student's address, only in North London.

- Host: Grace Barrett
- Duration: 120 min
- Location: In Person (Attendee Address)
- Host time zone: Europe/London
- Confirmation: Bookings are confirmed instantly.
- Payment: required, and collected on the booking page.
- Booking page: https://cal.com/londonsewingcourses/private-classes
- Event type id: 2647320

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=2647320&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": 2647320,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "location": {
    "type": "attendeeAddress",
    "address": "…"
  },
  "bookingFieldsResponses": {
    "attendeePhoneNumber": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `attendeePhoneNumber` (Phone number)
- Optional fields: `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.
- `location` is required: `location.address` is the attendee’s own.