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 you have a preferred restaurant and time

SOLUTION: Yes

PROBLEM: Please make a reservation at Limon for the 13th at morning 11:45.

SOLUTION: No

PROBLEM: What time would you like me to reserve?

SOLUTION:
Yes