TASK DEFINITION: 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.
PROBLEM: Please confirm this: Booking a table at Yayoi Cupertino. The city is Cupertino. The reservation is at 7:45 pm. The date is today. the reservation is for 2 people.

SOLUTION: No

PROBLEM: 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?

SOLUTION: No

PROBLEM: At what time reservation to be?

SOLUTION:
Yes