TASK DEFINITION: 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.
PROBLEM: At what time do you want to eat?

SOLUTION: Yes

PROBLEM: I would like my reservation for the 12th at half past 7 in the evening

SOLUTION: No

PROBLEM: For when do you want to make it?

SOLUTION:
Yes