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: In what city please?
Example Output: Yes

Example Input: Did you have a preferred restaurant and time?
Example Output: Yes

Example Input: To confirm, you want a reservation for a party of 2 at Odeum restaurant in Morgan Hill at 1:30 pm today.
Example Output:
No