TASK DEFINITION: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
PROBLEM: Sentence1: Wait, I might want to change my mind about that restaurant. Are there any that serve food from Corsica? Sentence2: No, there are none fitting that description, sir. Sorry about that. Sentence3: Booking was successful. The table will be reserved for 15 minutes. Reference number is : Q91F26L3 . Sentence4: Do you need any further assistance? Sentence5: Royal spice is cheap and looks great. Sentence6: I'm looking for places to eat in the North part of town. Sentence7: Thank you for using our services. Sentence8: You're more than welcome. May I do anything else for you today? Sentence9: Thanks, will you please book a table for 6 people on saturday at 12:45? Sentence10: its called city stop restaurant, serves european food and address is Cambridge City Football Club Milton Road Chesterton Sentence11: No, thank you. No further questions for now. Goodbye. Sentence12: I figured, my wife asks me odd random question sometimes, had to check. I am all set, thanks. Sentence13: I need a cheap place, please. Sentence14: Perfect! Thank you for all of your help. Sentence15: No, it is expensive. Sentence16: Is it a cheap restaurant? Question: Who has spoken the sentence 9? (A) User (B) System

SOLUTION: Answer: (B) System

PROBLEM: Sentence1: Booking was successful. Your reference number is : 1F0GOZ1D . Sentence2: Can you try 4 nights instead? Sentence3: I recommen a and b guest house. Should I book that? Sentence4: We have 6 total guesthouses in the east, any more preferences? Sentence5: Not particularly. Do you have one you would recommend? Sentence6: Yes, I would like free wifi and a 4 star rating. Sentence7: I'm looking for a guesthouse in the east please. Sentence8: funky fun house would be nice for you Sentence9: Great, could I also find someplace near the hotel to go for fun? Sentence10: Unfortunately there are no rooms available for Wednesday in the East. Could I look at a different location or day? Sentence11: please, For 2 people for 5 nights starting on Wednesday Sentence12: I have six places, is there a price range you have in mind? Question: Who has spoken the sentence 6? (A) User (B) System

SOLUTION: Answer: (A) User

PROBLEM: Sentence1: I have you booked on the TR0637 train. The total cost is 16.60 GBP, and the reference number is KQMHCZNL . IS there anything else that I can help you with? Sentence2: I want to leave after 08:45 please Sentence3: yes, i will book that Sentence4: We have a large amount of trains that day, is there a specific location? Sentence5: Tell me the arrival time of the 09:39 train please Sentence6: The first train to London Liverpool street is at 09:39 and arrives at 11:07 in Cambridge. Does this time work for you? or would you like later? Sentence7: Thank you for using the Cambridge TownInfo Centre. Goodbye! Sentence8: Sure. The 9:30 train leaves London Liverpool Street on Friday and arrives in Cambridge by 11:07. Would you like me to book that? Sentence9: No that is everything that I need. Thank you so much for your help. Sentence10: I'm sorry. There is no train leaving from london live to cambridge on friday by 8:45. Would you like to try a different day or time? Sentence11: what are the available options Sentence12: I want to go from london liverpool street to cambridge. Sentence13: What time would you like to leave? Sentence14: I apologize for the earlier confusion, we do have trains leaving every two hours starting at 09:39 until 01:07am. Which time works for you? Sentence15: Yes, please help me book a train on Saturday. Sentence16: Of course, how many tickets will you need? Sentence17: I just need one ticket please. Sentence18: Oh sorry, I wanted a train on Friday, not Saturday. Anything after 08:45 from london liverpool street. to cambridge. Question: Who has spoken the sentence 15? (A) User (B) System

SOLUTION:
Answer: (B) System