Given the task definition and input, reply with output. You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: That's all I need for now. Thanks! Sentence2: Each ticket is 4.40 pounds. Is there anything else I can help you with today? Sentence3: Sure, the phone number is 01223332138. Can I help you with anything else today? Sentence4: What can you tell me about magdalene college? Sentence5: TR2987 departs at 09:35 and arrives by 09:52. Would you like a ticket? Sentence6: okay! where is the destination? Sentence7: Ok, thank you. Goodbye. Sentence8: I also need a train from ely on Monday Sentence9: The train should arrive by 11:45 and should go to cambridge Sentence10: Great! Can you give me the phone number to magdalene college? Sentence11: It is located in the west area and has a free entrance fee. Sentence12: No how much are the tickets? Question: Who has spoken the sentence 3? (A) User (B) System
Answer: (B) System