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: Yes perfect. Do they serve liquor or have live music?
Example Output: Yes

Example Input: Okay. At what time would you like to eat there?
Example Output: Yes

Example Input: Please confirm you're booking a table for 4 at Sumac Mediterranean Grill in Belmont at 5:30 pm today.
Example Output:
No