You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Let me give you an example: 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
The answer to this example can be: Answer: (A) User
Here is 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

OK. solve this:
Sentence1: Can I have the address please? Sentence2: Certainly. The number is 01223 352500. Can I assist you any further? Sentence3: Yes. How about a restaurant serving british food? Sentence4: unfortunately there are no restaurants that suits you. do you want to try something else? Sentence5: Fitzbillies restaurant serves British food, is located in the center of town and is in the expensive price range. Sentence6: No, that was it. Thank you. Sentence7: May I have the phone number, please? Sentence8: fitzbillies restaurant is located at 51 Trumpington Street City Centre. Can I help you with anything else? Sentence9: Can you find me an expensive restaurant that serves steakhouse food? Sentence10: No it doesn't matter Sentence11: Thanks, have a nice day. Sentence12: I've found several British restaurants in the expensive price range. Does the area of town matter to you? Question: Who has spoken the sentence 1? (A) User (B) System
Answer:
Answer: (B) System