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 am headed to Cambridge and need to arrive by 1:30pm. Sentence2: I have booked two tickets for you. It'll be 16.16 GBP and the reference number is: VZK4BVQ5 Sentence3: You're welcome. I hope you enjoy your trip! Sentence4: The TR8488 leaves Stansted at 12:24 and arrives in Cambridge at 12:52. Would that suit you? Sentence5: It is a museum in the center of town. Sentence6: Where are you headed? Sentence7: Phone number is 01223324222 and postcode is cb21su. Sentence8: It would, thanks. Please make me a booking for 2 people on that train. Sentence9: Thanks, that's all I need today. I appreciate your help. Sentence10: Can you help me find a train leaving Saturday, departing from stansted airport? Sentence11: I'm looking for the Cambridge Contemporary Art. Sentence12: May I have the phone number and postcode? Question: Who has spoken the sentence 5? (A) User (B) System
Output:
Answer: (B) System