Thank you everyone for the helpful suggestions. I'll be grateful if you can please tell me whether the flight qualifies for free transit hotel.

Here is the itinerary:
Sep-5 Thursday TK717 Delhi (6:30 am) to Istanbul (10:55 am)
21 hours 15 minutes layover in Istanbul.
Sep-6 Friday TK291 Istanbul (8:10 am) to Dallas (1:05 pm)