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.

Example Input: Please confirm. You want to watch The Invisibles without subtitles.
Example Output: No

Example Input: Was there something else I could assist with?
Example Output: Yes

Example Input: Please confirm the following details: a reservation for 2 people at Applebee's Grill + Bar, today, at 1:30 pm, in Alameda.
Example Output:
No