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: No thank you. That will be all.
Example Output: No

Example Input: Okay, making sure I've got all the details: you want a table for 2 at Bob's Steak & Chop House in San Francisco next Friday at 5:15 pm?
Example Output: No

Example Input: At what time do you want to reserve the restaurant?
Example Output:
Yes