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: There is a restaurant called Thanh Binh. Would you like me to book a table? Sentence2: Yes i would like a table for 7 people on monday at 13:15 Sentence3: We would prefer vietnamese please. In the west area? Sentence4: How many tickets would you like me to book? Sentence5: The travel time is 49 minutes. Would you like to know any more info? Sentence6: Thank you, what is the arrival time? Sentence7: Your reservation has been set for Monday at 12:15 for 7 people. The reference number is 3MTLQCBA . Can I do anything else for you? Sentence8: I am leaving from Cambridge and headed to Stevenage. I would like to leave after 17:30 please. Sentence9: Just one ticket, please. Sentence10: Certainly. The train will arrive at 20:10. Can I help you with anything else? Sentence11: Can you tell me when that train will be arriving in stevenage? Sentence12: Alright, TR6692 looks like your best bet. Would you like me to book you passage? Sentence13: Thank you I also need a train on tuesday leaving after 17:30 Sentence14: I think that about does it. Thanks for the help today. Sentence15: I need to find a cheap place to eat. Sentence16: Booking was unsuccessful do you have any other preference? Sentence17: Can you try 12:15 on Monday? Sentence18: I've booked that ticket for you. The reference number is FTLHURXQ, and the total fee is 12.8 GBP. Sentence19: It was my pleasure to assist you. Thanks for using our service. Have a wonderful day. Goodbye. Sentence20: Yes. Please book that for me. Thanks so much! Sentence21: I can find that for you. What cuisine are you interested in? Sentence22: I would be happy to help with that. Can you tell me the departure city and where you are going? Question: Who has spoken the sentence 11? (A) User (B) System

SOLUTION: Answer: (B) System

PROBLEM: Sentence1: Your booking was successful! Your reference number is EV4ADBI9 . Sentence2: I need it for Sunday. Sentence3: Yes. Let's book it. Sentence4: I would like it to be in the west. It doesn't matter if it has free parking or not. Thank you! Sentence5: There are four three star guest houses. Is there an area of town that interests you the most? Sentence6: Train TR3154 leaves cambridge at 13:06 and will arrive at peterborough at 13:56 on Monday. Would you like me to book a ticket? Sentence7: I am looking to stay at a guesthouse that has a 3 star rating. Sentence8: ok for how long and how many people please Sentence9: I want a train that goes to peterborough and leaves after 13:00 Sentence10: Does it leave on Monday? Sentence11: There is the hobsons house. Would you like me to book it? Sentence12: For 3 days and 2 people,I need a confirmation number too Sentence13: and what day do you need the reservation for? Sentence14: The next train is the TR0545 leaving cambridge at 13:06. Would you like me to book it or more information? Question: Who has spoken the sentence 12? (A) User (B) System

SOLUTION: Answer: (A) User

PROBLEM: Sentence1: 4 stars, please, but still just moderately priced. Sentence2: One with free parking would be great! Sentence3: Thank you. Can you tell me if there is a train going to Norwich on Friday? Sentence4: My apologies, the train ID is actually TR4886, it costs 17.60 pounds per ticket and is a 79 minute trip. The train arrives at 21:55. Sentence5: I found 11 guesthouses matching your preferences. Do you have a star rating you'd prefer? Sentence6: You are welcome, what else can I do for you today? Sentence7: I have 19 trains departing for Norwich on Friday. Do you have a preferred departure time? Sentence8: I have 7 guesthouses that fit your needs. Do you have any other preferences? Sentence9: Hi, I am looking for a guesthouse to stay on the north side of Cambridge. Sentence10: Yes, after 19:45 and departing from cambridge please. Sentence11: Okay, thank you for your help! Sentence12: Great can I get the address of one and whether or not they have free parking? Sentence13: Okay, the TR4885 train leaves at 20:36 and arrives by 21:55. Would that work for you? Sentence14: Nope, that's everything. You've been very helpful. Sentence15: Yes, I think that will work. Can you tell me the price, travel time and confirm the arrival time please? Sentence16: There are 6 guesthouses that match your criteria. If you give me your length of stay and beginning date perhaps I can narrow them down for you. Sentence17: Thank you very much! I am glad i was able to you find everything you needed. Have a wonderful day and I hope you'll use our service again. Sentence18: Arbury Lodge at 82 Arbury Road has free parking. Question: Who has spoken the sentence 11? (A) User (B) System

SOLUTION:
Answer: (B) System