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.

thank you very much.that is all i need.
No

Sorry, the reservation was unsuccessful. What else may I do for you?
No

No, I would actually like to make the reservation at a different restaurant. I would like it at Mazzat in San Fran.

No