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: May I have their contact number?
Example Output: Yes

Example Input: We want to eat at the Claw Shack in San Jose. Please make the reservation for 11:30 am.
Example Output: No

Example Input: Your reservation has been successful. Their price range is moderate.
Example Output:
No