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: At what time do you want to eat?

Answer: Yes


Question: Please confirm the following details: a reservation for 2 people at Applebee's Grill + Bar, today, at 1:30 pm, in Alameda.

Answer: No


Question: Do they have alcohol?

Answer:
Yes