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: The train from Norwich to Cambridge is about 45 minutes. Do you have a preferred departure or arrival time? Sentence2: The Cambridge Belfry is perfect for you. Would you like me to book it? Sentence3: Saturday train from Norwich please. Sentence4: Is there any other hotels that would work in that area that are 4 star? Sentence5: Great, I have booked you for acorn guest house. Your reference number is O2JPQNG5 . Sentence6: Yes, please book that for the same group of people for 4 nights the same day. Wednesday would work also, and I need the reference number. Sentence7: No, I would really like a 4-star hotel in the north area with free parking. Can you please check again? Sentence8: The best response I have to that is a train arriving at 13:35. Would you like me to book that option for you? Sentence9: Yes, for 7 people please. Sentence10: Sorry, there are only guesthouses. Sentence11: I recommend the acorn guest out. Shall I book that then. Sentence12: Unfortunately, I can't book either days for you. Sentence13: Thank you very much. That's all I need. Sentence14: I am also looking for a place to stay. I'd like a hotel with a star of 4 of course that will include free parking. Sentence15: You have been successfully booked for 7 people on Train TR2334, Reference number 01MDBEIB . It departs Norwich at 12:16. Your total cost is 98.56 and is payable at the station. Sentence16: I will book it for you,is there anything else I can do for you ? Sentence17: Yes please. I would like to arrive by 14:00. Sentence18: You are welcome, enjoy your stay Sentence19: Before you book, the hotel has to be in the north, also. Do you have a hotel meeting my needs? Sentence20: I don't have any hotels in that area that are 4 star. I do have several guesthouses. Would that work for you? Sentence21: Yes for 4 nights same group of people as the restaurant reservation and also on the same day please. Sentence22: I guess we will take a guesthouse then. Which one would you recommend? Question: Who has spoken the sentence 18? (A) User (B) System
Solution:
Answer: (A) User