Detailed Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Problem:Sentence1: No that's everything I need. Thank you! Sentence2: Phone number is 01223295264. Postcode is cb30aq. Address is 23 high street, fen ditton. Sentence3: Okay thank you very much. Sentence4: What train do I need to take to get to Norwich from Cambridge? Sentence5: How about the Lynne Strover Gallery? Sentence6: That sounds wonderful. Can you give me the address, postcode, and phone number? Sentence7: Excellent. I'm also looking to go to a museum on the west part of town. Sentence8: Yes book the ticket please. Sentence9: Sure. The price per ticket is 14.08 pounds. Can I book you a ticket? Sentence10: Can I ask how many tickets you will need? Sentence11: You're very welcome, have a great day and text us back any time! Sentence12: I'll be leaving Sunday and need to arrive by 21:30. Sentence13: Can I help you with anything else today? Sentence14: Yeah, can I please get the price? Sentence15: It looks like there are trains from Cambridge to Norwich every day. What day/time will you be traveling on? Sentence16: TR4082 will arrive by 20:55 would that work for you? Sentence17: On second thought, I don't need a ticket reserved. Could you tell me what the travel time will be on that train, though? Sentence18: Sure - the trip from Cambridge to Norwich is 79 minutes. Question: Who has spoken the sentence 4? (A) User (B) System
Solution:
Answer: (A) User