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.

[EX Q]: 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?
[EX A]: Yes

[EX Q]: Please confirm. You want to watch The Invisibles without subtitles.
[EX A]: No

[EX Q]: Your reservation was scheduled successfully.
[EX A]:
No