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: thank you very much.that is all i need.

SOLUTION: No

PROBLEM: No, actually I want the reservation at Celia's in SFO.

SOLUTION: No

PROBLEM: What is the reservation time?

SOLUTION:
Yes