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: That's it. Thanks. Sentence2: Peking restaurant has good reviews would you like that? Sentence3: All right, what else can I help you with? Sentence4: No thank you, I don't need a reservation. Sentence5: I prefer Chinese food thanks. Sentence6: Can you locate an expensive restaurant in the south? Sentence7: Absolutely. The Peking Restaurant is located at 10 Homerton Street, City Centre. Their postcode is cb28nx. Can I reserve you a table by chance? Sentence8: You are welcome. Have a lovely day. Sentence9: That sounds good. Can I have the postcode and address please? Sentence10: I sure can. Do you prefer Chinese, Italian, Indian or Mexican food? Question: Who has spoken the sentence 6? (A) User (B) System
Solution:
Answer: (A) User