Detailed Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: No, thank you. Sounds good Sentence2: Alright, when do you want to leave and arrive? Sentence3: No problem! Where do you plan to go on Saturday? Sentence4: Arrival time is not important, but the train should leave after 14:30. Sentence5: Booking was successful, the total fee is 7.84 GBP payable at the station. Reference number is : QA65LM7A . Is there anything else I can help with? Sentence6: I want to go to Kings Lynn. Sentence7: I'm looking for a train out of cambridge on Saturday. Sentence8: Have a wonderful day. Question: Who has spoken the sentence 7? (A) User (B) System
A:
Answer: (B) System