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: Thank you so much. That is all I will need today. Sentence2: Great, how many tickets would you like to purchase? Sentence3: That would be perfect! Sentence4: I am looking to go from cambridge, and go on friday arriving by 14:30 Sentence5: Okay, how about the TR5901 leaving at 13:34 and arriving at 14:24 with a duration of 50 minutes? The cost is 16.50 pounds. Would that work for you? Sentence6: There are 266 trains going to Peterborough. Can you give me a departure day and time so that I can narrow down your choices? Sentence7: Your tickets are all booked, reference number R5P65TW5 Sentence8: I'd like to find a train to peterborough. Sentence9: Thank you for contacting Cambridge TownInfo centre. Have a wonderful day! Sentence10: 7 tickets please. Can I also have the reference number for the booking? Question: Who has spoken the sentence 4? (A) User (B) System

SOLUTION: Answer: (A) User

PROBLEM: Sentence1: I'd like to find a 4 star guesthouse, please. Sentence2: The Place is a great nightclub in the south, located at 22 sidney street, post code cb23hg. The phone number is 01223324600. Is there anything else I can help you with? Sentence3: Yes, book it for me please. Thank you. Sentence4: It does not really matter. It will be just me starting on Friday for 3 nights. Sentence5: What attractions do you have in the south? Sentence6: I have found 18 guesthomes that match the criteria you listed. Is there any other specifications you have about the guesthouse (area,price range,etc) that you would like to tell me? Sentence7: Unfortunately, the booking was unsuccessful. Would you like to shorten your stay or try another place to stay? Sentence8: arbury lodge guesthouse is a moderately priced guesthouse in the north. How does that sound? Sentence9: The arbury lodge guesthouse is in the moderate price range. Sentence10: We have 8 types of attractions in the south? What type are you looking for? Sentence11: Sure, is there an area you prefer? Sentence12: I have to have free wifi Sentence13: I would like a room that is close to the nightclub for atleast 1 night up to 3 nights? Sentence14: Hmm, I'm not really sure. Do you happen to have any nightclubs? If not, what are my choices? Question: Who has spoken the sentence 6? (A) User (B) System

SOLUTION: Answer: (A) User

PROBLEM: Sentence1: I have confirmed your taxi departing from allenbell at 21:15 to shanghai family restaurant. The contact number is 07779063338. Is there anything else we can help you with? Sentence2: Do you have a preference for the hotel's area or price range? Sentence3: The area doesn't really matter, but I would like something cheap. Sentence4: Hello I'm looking for the shanghai family restaurant. Sentence5: You're welcome. Good-bye. Sentence6: What is your destination? Sentence7: I have both the Autumn House and the Allenbell. They are both guesthouses on the east side of town with a 4 star rating. Should i book one for you? Sentence8: The booked Car type is a Red Toyota. Sentence9: I don't have a particular destination for my taxi. Sentence10: I'm sorry, but I cannot provide you information on the taxi without knowing your destination. Sentence11: The postcode is cb11dg. Sentence12: I need to get from the allenbell hotel to the shanghai family restaurant, please. Sentence13: Yes I would like to stay on the east side of town. Sentence14: Yes, I also need the car type. Thank You Sentence15: I have at least 8 hotels that might suit you. They all have internet, a 4 star rating and are in the cheap price range. Do you have a preference for what part of town you stay in? Sentence16: Can you find me a 4 star hotel? Sentence17: I'm sorry, but I don't have any hotels that match that criteria. Would you like to change your requirements? Sentence18: I will als require a taxi. I need to leave the hotel by 21:15. Can you provide he contact number and the type of car please. Sentence19: The Allenbell is fine. Could you book a stay for 7 people, starting on Tuesday, for 4 nights? I also need a reference number. Sentence20: Great I am also looking for a hotel with a 2 star rating that has free parking. Sentence21: Can you tell me the postcode? Sentence22: Yes I got it, what can I do for you sir? Sentence23: Thank you so much for all of your help, have a great day! Sentence24: Booking was successful. Reference number is : AVPKTYBJ . Question: Who has spoken the sentence 15? (A) User (B) System

SOLUTION:
Answer: (B) System