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: Thanks, that's all I need today.

SOLUTION: No

PROBLEM: I'd like to make a restaurant reservation at quarter to 7 in the evening.

SOLUTION: No

PROBLEM: Which city would you like to eat at?

SOLUTION:
Yes