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? What is the address of the restaurant.

SOLUTION: Yes

PROBLEM: Booking a table at Pampalasa in San Francisco at 11:30 am for 2 people for tomorrow

SOLUTION: No

PROBLEM: Just to confirm, you want to make a reservation at Mcdonald's today for 2 people at 4:45 pm in San Francisco.

SOLUTION:
No