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.

Q: uh-ch! Sorry the system crashed and I couldn't make your reservation. Do you need any other details?

A: No
****
Q: At what time do you want to go?

A: Yes
****
Q: Much appreciated.

A:
No
****