query GetAppointmentDurationOptions($appointmentId: ID!) {
  getAppointmentDurationOptions(appointmentId: $appointmentId) {
    appointmentId
    currentStartAt
    currentEndAt
    currentDurationMinutes
    timezone
    options {
      endAt
      durationMinutes
      conflicts {
        kind
        appointmentId
        startAt
        endAt
        targetName
        targetStartAt
      }
    }
  }
}

{
  "appointmentId": "id"
}

{
  "data": {
    "getAppointmentDurationOptions": {
      "appointmentId": "id",
      "currentStartAt": "value",
      "currentEndAt": "value",
      "currentDurationMinutes": 1,
      "timezone": "string",
      "options": [
        {
          "endAt": "value",
          "durationMinutes": 1,
          "conflicts": [
            {
              "kind": "string",
              "appointmentId": "id",
              "startAt": "value",
              "endAt": "value",
              "targetName": "string",
              "targetStartAt": "value"
            }
          ]
        }
      ]
    }
  }
}