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:
Works for me. How pricey are they?
answer:
Yes


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


question:
I'd like to book a spot at a diner.
answer:
No