instruction:
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.
question:
I was unable to make that reservation. Can I help with anything else?
answer:
No


question:
Yes, sounds great. Do they serve liquor at the restaurant?
answer:
Yes


question:
Actually I'll need a table for 4 at 1:45 pm.
answer:

No