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: You're welcome. Enjoy the movie.
Example Output: No

Example Input: No problem. What time would you like a reservation for?
Example Output: Yes

Example Input: Can you tell me if they serve Punjabi, I've been wanting to try that. I will also need the address for my GPS.
Example Output:
Yes