You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1:i need a place to dine in the center thats expensive Sentence2: I have several options for you; do you prefer African, Asian, or British food? Sentence3: Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation?Question: Who has spoken the sentence 2? (A) User (B) System
Solution: Answer: (A) User
Why? The sentence 1 is said by a user because the intent of it says that the information has to be gathered from the system

New input: Sentence1: Perfect! Thank you Sentence2: Nope that's it! Thanks so much! Sentence3: Can I get the information on what area you are looking for the restaurant to be in? Sentence4: The Cambridge Chop House sounds nice book me a table for 2 this Monday at 12:45 please. Sentence5: Centre of Cambridge Sentence6: That wasn't available. I did get a table at Fitzbillies though. It also meets all of your requirements. Your reference number is BLRXV0B0 . Is that all today? Sentence7: You're welcome. Good-bye. Sentence8: Is there anything else i can assist you with? Sentence9: I have 3 restaurants that meet your request. Would you like information on any of them? I recommend you check out The Cambridge Chop House. Sentence10: Yes, I would be interested in the British food fare that is available. Just a nice local restaurant with good expensive food would be nice. Thank you. Question: Who has spoken the sentence 9? (A) User (B) System
Solution:
Answer: (B) System