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: To confirm: I'm booking a reservation for 2 people at Jing-Jing Szechwan & Hunan Gourmet in Palo Alto next Friday at 12:15 pm.

SOLUTION: No

PROBLEM: Do they serve alcohol? And what's their phone number?

SOLUTION: Yes

PROBLEM: No, the name of the restaurant is El Amigo and it is for 1 person.

SOLUTION:
No