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: What type of cuisine do you want? Mexican, Chinese or which one?

SOLUTION: Yes

PROBLEM: Yes, that would be very helpful.

SOLUTION: No

PROBLEM: Book a table at Sukho Thai in Oakland at 5 pm on next Friday for 2 people.Is OK?

SOLUTION:
No