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: Please make the reservation for 1 person.
Example Output: No

Example Input: are you sure. do you want booking a table at village california bistro and wine bar in san jose on today at 11:30 am for 2 people
Example Output: No

Example Input: Thats right. Is it affordable? Do they serve liquor?
Example Output:
Yes