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: At 20:16 a train leaves for Cambridge duration of which is 79 minutes. Sentence2: I have about 19 different trains. Do you have a certain time you would like to leave after or arrive by? Sentence3: Allenbell does indeed have wifi. Would you like a reservation? Sentence4: Can you help me find a train leaving Tuesday from Norwich? Thanks. Sentence5: That sounds great, I want to find you the perfect place! Is pricing a factor, do you have a part of the city in mind? Sentence6: I want to leave after 20:15. Sentence7: I don't need a specific area. What do you recommend? Sentence8: I need more information please. What area of town? Sentence9: Booking was a success! Your reference number is: XJGR0GCN . Sentence10: Can you help with info on places to stay? Sentence11: The allenbell in the east is a cheap hotel with 4 stars. Sentence12: Yes please. I'm celebrating my anniversary with myself, so I need a room for 1 starting Tuesday for 4 nights. Sentence13: I would like a really nice place because I'm celebrating my 10 year anniversary. Something cozy and romantic. Sentence14: Booking was successful, the total fee is 17.6 GBP payable at the station. Reference number is : UK9225HY . Is there anything else I can do for you today? Sentence15: Yes, I can help with that. What are your preferences of area, price range, and type of accommodation? Sentence16: Does it have free wifi? Sentence17: Price is no concern for me. I need it booked for 1 person for 4 nights starting on Tuesday please. Sentence18: I would like to making a booking for one please. Question: Who has spoken the sentence 5? (A) User (B) System
Solution:
Answer: (B) System