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]: No, that will be all. Thank you very much.
[EX A]: No

[EX Q]: No problem. What time would you like a reservation for?
[EX A]: Yes

[EX Q]: Do you have a preferred restaurant and time
[EX A]:
Yes