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: Yes, that would be very helpful.

SOLUTION: No

PROBLEM: Sure, What time is good for you?

SOLUTION: Yes

PROBLEM: Sorry, the system crashed and I couldn't do your booking. Anything else, you want me to help you?

SOLUTION:
No