# Chemistry Trial Session with TACHYON CLASSES

> One to one online chemistry tutoring lessons for General Chemistry, Organic chemistry and Physical chemistry.

- Host: TACHYON CLASSES
- Duration: 30 min
- Location: Google Meet
- Host time zone: Asia/Calcutta
- Confirmation: Bookings are confirmed instantly.
- Payment: required, and collected on the booking page.
- Booking page: https://cal.com/tachyonclasses/chemistrytrialsession
- Event type id: 696547

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=696547&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": 696547,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "Are-you-a-student--parent-guardian": "…",
    "Grade-or-Year": "…",
    "Curriculum-or-Syllabus-or-Course-code": "…",
    "City-or-State": "…",
    "Whatsapp---Phone-number": "…",
    "What-Chemistry-topic-s--do-you-need-help-with": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `Are-you-a-student--parent-guardian` (Are you a student, parent/guardian?), `Grade-or-Year` (Student's Current Grade or Year or Class), `Curriculum-or-Syllabus-or-Course-code` (Curriculum or Syllabus or Course code), `City-or-State` (City or State)
- Optional fields: `guests` (Add guests), `Whatsapp---Phone-number` (Whatsapp / Phone number), `What-Chemistry-topic-s--do-you-need-help-with` (What Chemistry topic(s) do you need help with?)
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.