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:
I want to reserve a table at 7:45 in the evening, in a restaurant.

Ex Output:
No


Ex Input:
Yes. What's their phone number?

Ex Output:
Yes


Ex Input:
Yes. Please go ahead.

Ex Output:
No