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: You're welcome, good day.

SOLUTION: No

PROBLEM: Your reservation has been accepted. They serve Seafood and their price range is quite moderate.

SOLUTION: No

PROBLEM: Are you looking for Mexican or Italian food?

SOLUTION:
Yes