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:
uh-ch! Sorry the system crashed and I couldn't make your reservation. Do you need any other details?
answer:
No


question:
I can help you with that, let's gather some specifics first. Do you have a particular restaurant in mind, if not what area would you like me to look in, and what time do you need the reservation set for?
answer:
Yes


question:
We want to eat at the Claw Shack in San Jose. Please make the reservation for 11:30 am.
answer:

No