You are given a sentence from a conversation between a human and a virtual assistant. Your task is to identify whether the sentence is a question or not. Answer with Yes or No.

[EX Q]: What time would you like for your reservation.
[EX A]: Yes

[EX Q]: Yes, that's fine too.
[EX A]: No

[EX Q]: Okay, which city would you like me to search?
[EX A]:
Yes