Booking.com task

gistfile1.txt

// данные о конкретной резервации
{
  "checkin": 176,
  "checkout": 178,
  "features": ["breakfast"],
  "rooms": 1
}

// должен получиться такой ответ (то что вернет функция)
[
  {
    "price": 250,
    "features": ["breakfast"],
    "availability": 1
  },
  {
    "price": 260,
    "features": ["breakfast", "refundable"],
    "availability": 3
  }
]

// исходные данные
{
  176: [
    {
      "price": 120,
      "features": ["breakfast", "refundable"],
      "availability": 5
    }
  ],
  177: 	[
    {
      "price": 130,
      "features": ["breakfast"],
      "availability": 1
    },
    {
      "price": 140,
      "features": ["breakfast", "refundable", "wifi"],
      "availability": 3
    }
  ],
  178: [
    {
      "price": 130,
      "features": ["breakfast"],
      "availability": 2
    },
    {
      "price": 140,
      "features": ["breakfast", "refundable", "wifi"],
      "availability": 10
    }
  ]
}