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]: I would like to make a restaurant reservation.
[EX A]: No

[EX Q]: I want to reserve a spot at a table tonight.
[EX A]: No

[EX Q]: Do they serve liquor? How pricey are they?
[EX A]:
Yes