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: uh-ch! Sorry the system crashed and I couldn't make your reservation. Do you need any other details?
Example Output: No

Example Input: Alright, what type of food would you like?
Example Output: Yes

Example Input: Do you know their contact number and if they serve liquor?
Example Output:
Yes