Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: I'm are looking for a train. The train should depart from peterborough and should leave after 10:15 Sentence2: What day would you like to depart? Sentence3: It will be Sunday, from peterborough to cambridge, I will need the price of the ticket as well. Sentence4: The closest match I have is the TR8509. It leaves at 10:19. Sentence5: It costs 13.20 pounds. Do you need any other information? Sentence6: No that is all. Thanks for your help! Sentence7: That sounds good. What is the train fare, please? Sentence8: You are welcome! Have a nice day. Question: Who has spoken the sentence 7? (A) User (B) System
Output:
Answer: (B) System