curl --request DELETE \
  --url https://api.nova-cloud.ai/reservations/{reservation_id} \
  --header 'Authorization: Bearer <token>'

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "user_id": 123,
  "vm_id": "<string>",
  "reservation_months": 123,
  "discount_percent": 123,
  "deposit_amount": 123,
  "remaining_balance": 123,
  "created_at": "2023-11-07T05:31:56Z",
  "end_at": "2023-11-07T05:31:56Z",
  "cancelled_at": "2023-11-07T05:31:56Z",
  "cancellation_fee": 123,
  "refund_amount": 123
}