List bookings

{
    "data": [
        {
            "id": 1501,
            "candidate": {
                "name": "Jane Smith",
                "email": "jane.smith@example.com",
                "phone": "+441234567890"
            },
            "course": {
                "id": 1,
                "name": "BLS — Annual Renewal"
            },
            "trainer": {
                "id": 3,
                "name": "Dr. Sarah Connor"
            },
            "start_date": "2026-06-10T09:00:00+01:00",
            "end_date": "2026-06-10T10:00:00+01:00",
            "booking_status": "booked",
            "pay_status": "completed",
            "pay_option": "credits",
            "booked_by": "Agency",
            "virtual": {
                "zoom_id": "123 456 7890",
                "zoom_link": "https://zoom.us/j/1234567890",
                "zoom_password": "abc123"
            },
            "certificate_available": false,
            "created_at": "2026-06-03T18:00:00+00:00"
        }
    ],
    "links": {
        "next": "http://example.com",
        "prev": "http://example.com"
    },
    "meta": {
        "current_page": 0,
        "per_page": 0,
        "last_page": 0,
        "total": 0
    }
}