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'm thinking 5:15 pm.
[EX A]: No

[EX Q]: I was able to successfully confirm those reservations for you and you should be all set with them.
[EX A]: No

[EX Q]: Yes that's fine
[EX A]:
No