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.

Input: Consider Input: Yes, That's it.May I know the price ?

Output: Yes


Input: Consider Input: Yes, sounds great. Do they serve liquor at the restaurant?

Output: Yes


Input: Consider Input: Their prices are considered on the low end, so it's inexpensive. Your reservation is now confirmed. The phone number is 707-864-1001.


Output: No