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: Thanks. Next can I get some info on theatre's in the centre? Sentence2: I was able to book a table for two at the restaurant. Your confirmation number is DI0KD8LZ . The table will be reserved for 15 minutes. Sentence3: I would also like to know about any attractions that is in the centre of town that is a theatre type. Sentence4: Can you recommend one for me please? Sentence5: There is also Cambridge Arts Theatre, Mumford Theatre, and The Cambridge Corn Exchange. Sentence6: I'm sorry, but I'm not showing any Muslim restaurant listings. Is there another type of food you would like to try? Sentence7: Could you give me their address? Sentence8: The cambridge arts theatre is located at 6 saint edward's passage. postcode cb23pj Sentence9: sure when would you like to eat? Sentence10: I'd like to book a table for two around 19:45 on wednesday. Sentence11: I have four places there, what would you like to know? Sentence12: can you book the backstreet bistro for me ? Sentence13: You may help me by finding a Muslim restaurant for me to eat at please. Sentence14: Could I get the address for the Cambridge Arts Theatre? Sentence15: The address is park street. Is there anything else I could help you with? Sentence16: ADC is a good place, what would you like to know? Question: Who has spoken the sentence 7? (A) User (B) System
Solution:
Answer: (B) System