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.

[EX Q]: What time did you want the reservation for?
[EX A]: Yes

[EX Q]: Thanks a lot, that'll be all.
[EX A]: No

[EX Q]: Book a table at Sukho Thai in Oakland at 5 pm on next Friday for 2 people.Is OK?
[EX A]:
No