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.

[Q]: Yes, that would be very helpful.
[A]: No


[Q]: Sorry but there is no availability for 4:30 pm at Mazzat in San Francisco today. Is there anything else I could assist you with?
[A]: No


[Q]: What city please?
[A]:
Yes