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.

Example Input: Sure, which city?
Example Output: Yes

Example Input: I want a reservation for Hisui in Vacaville at, say, quarter to 8 in the evening.
Example Output: No

Example Input: Its alright, now please confirm, reservation on the next Friday at 11:30 am
Example Output:
No