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.
--------
Question: I want to make a reservation at restaurant Hisui 2.

Answer: No


Question: Let's make it an evening 7:30 reservation and you should look in San Francisco.

Answer: No


Question: Certainly. What is the city you are looking for?

Answer:
Yes