# Free Doubt-Solving Session (Classes 8-10) with The Banyan Tree Learning Center (TBTLC)

> A free one-to-one, 60-minute doubt-solving session for Class 8, 9 and 10 students (CBSE / ICSE) ahead of finals and board exams. Pick any time that suits you and send the request. Our team will call you on WhatsApp/phone to confirm the subject, chapters and whether the session is at our Kharghar centre or online. Your slot is confirmed only after that call.

- Host: The Banyan Tree Learning Center (TBTLC)
- Duration: 60 min
- Host time zone: Asia/Kolkata
- Confirmation: The host confirms each booking; it stays pending until they accept it.
- Booking page: https://cal.com/tbtlc/free-doubt-solving
- Event type id: 7769889

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=7769889&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": 7769889,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "bookingFieldsResponses": {
    "attendeePhoneNumber": "…",
    "WhatsApp-number": "…",
    "Student-s-class": "…",
    "Board": "…",
    "subject-topics": "…",
    "Preferred-mode--we-will-finalise-on-the-call": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `attendeePhoneNumber` (Phone number (for our call)), `WhatsApp-number` (WhatsApp number), `Student-s-class` (Student's class), `Board` (Board), `subject-topics` (Subject and chapters / topics), `Preferred-mode--we-will-finalise-on-the-call` (Preferred mode (we will finalise on the call))
- 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.
- A successful response is a pending booking request.