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: What time should I reserve for?

SOLUTION: Yes

PROBLEM: I'd like to watch a movie right now.

SOLUTION: No

PROBLEM: Please confirm the change in details: The reservation is for 4 people at the Maruya.

SOLUTION:
No