{
  "08:00-10:00": [
    {
      "student_name": "Budi Arsana",
      "student_age": 27,
      "student_nationality": "IND",
      "use_transport": true,
      "courses": [
        {
          "name": "Course01",
          "code": "C1",
          "quantity": 1
        },
        {
          "name": "Course02",
          "code": "C2",
          "quantity": 2
        }
      ],
      "start_time": "09:00",
      "hotel": "Novotel",
      "agent": "La Point",
      "phone": "081777999888",
      "notes": "this is a note"
    },
    {
      "student_name": "Gede Rumindra",
      "student_age": 27,
      "student_nationality": "IND",
      "use_transport": true,
      "courses": [
        {
          "name": "Course01",
          "code": "C1",
          "quantity": 1
        },
        {
          "name": "Course02",
          "code": null,
          "quantity": 1
        }
      ],
      "start_time": "09:00",
      "hotel": "Novotel",
      "agent": "La Point",
      "phone": "081777999888",
      "notes": "this is a note"
    }
  ],
  "10:00-12:00": [
    // content is same with "08:00-10:00"
  ],
  "01:00-03:00": [
    // content is same with "08:00-10:00"
  ]
}