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]: Yes that's good. Do they serve liquor there?
[EX A]: Yes

[EX Q]: I would like a reservation for two people at Shiki at one in the afternoon.
[EX A]: No

[EX Q]: Thank you! That's it.
[EX A]:
No