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: Do they serve liquor or have live music?

SOLUTION: Yes

PROBLEM: Okay. At what time would you like to eat there?

SOLUTION: Yes

PROBLEM: I wanna make a reservation at a restaurant.

SOLUTION:
No