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: Do you have a preference for type of food? You can say Indian, American, Italian, or something else.
Example Output: Yes

Example Input: Okay, I have a reservation at Buon Appetito in Hayward for 1:30 pm on March 11th for 2 people, is this correct?
Example Output: No

Example Input: Was there anything else I can help you with?
Example Output:
Yes