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: Confirming a table for 1 at House of Curries in Berkeley at 1:15 PM today.
Example Output: No

Example Input: Yes. What is the phone number? Can I buy alcohol there?
Example Output: Yes

Example Input: Your reservation was confirmed.
Example Output:
No