How to deserilize the json dynamic array

Hi all,
 I want to deserialize the json dynamic array. But not able to deserialize properly below is my code.
[{"airports": {}, "segments": [{"date": "2015-03-12", "original_origin": "DEL", "origin": "DEL", "destination_country": "IN", "destination": "HYD", "original_destination": "HYD", "origin_country": "IN"}], "signature": "20c36be407eefeef255fa5c6cd4d091c", "gates_info": {"222": {"productivity": 0, "is_airline": true, "currency_code": "gbp", "payment_methods": ["card"], "airline_iatas": ["MT"], "label": "Thomas Cook", "average_rate": 0, "mobile_version": false, "rates": 0}}, "search_id": "b4d276b7-4eac-44d6-a9e0-4b9 ...