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: Your reservation is a success.

SOLUTION: No

PROBLEM: Are you looking for Chinese food? Italian food? Some other kind of food? Which city are you planning on eating in?

SOLUTION: Yes

PROBLEM: I wish to make a reservation at a restaurant in Pleasant Hill.

SOLUTION:
No