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.

Ex Input:
please tell me what time is the reservation for?

Ex Output:
Yes


Ex Input:
Confirming a booking at West Park Bistro in San Carlos at 12:45 PM today for 2 people.

Ex Output:
No


Ex Input:
No. Thanks for your help.

Ex Output:
No