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: No, thank you,

SOLUTION: No

PROBLEM: the restaurant is la traviata.i want it in san fran.make it at 6:30 pm

SOLUTION: No

PROBLEM: I won't have time to make dinner after my big meeting so I would like to make a dinner reservation.

SOLUTION:
No