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: Graffiti sounds good. I actually need that reservation for 5 people at 20:00 on Wednesday. Can I have the reference number for that? Sentence2: There are two trains that would work. One arrives at 07:07 and the other arrives at 01:07. Which one would you prefer? Sentence3: I would recommend Graffiti. It is a bit expensive, so if you want something moderately price there is also Saint Johns Chop House. Sentence4: Great, thanks! That's all I needed right now! Sentence5: Alright, I've booked a train for your group, the reference number is AOIMGBHK, and there will be an 83 GBP fee at the station. Sentence6: What time would you like these reservations? Sentence7: I need to find a British restaurant in West Cambridge. Sentence8: i can definitely do that, how many tickets would you like? Sentence9: No, can you recommend a favorite? Sentence10: I would also like a train departing from london liverpool street and arriving in Cambridge at 09:00 on the same day. Sentence11: Please book 2 tables for 8 people on friday also i need train tickets for 8 people. Sentence12: There are multiple options for you. To narrow them down what price range do you have in mind? Sentence13: Can you book the train that arrives at 07:07 that one would work great. I need the reference number as well. Sentence14: it's for the same group of people Sentence15: Booking was successful. The table will be reserved for 15 minutes. Reference number is : YYPPDY56 . anything else i could help you with? Sentence16: You're welcome. Have a great day. Question: Who has spoken the sentence 11? (A) User (B) System

SOLUTION: Answer: (B) System

PROBLEM: Sentence1: I'd like to find a train going to Cambridge that leaves on Sunday. Sentence2: Okay. It's a 3-star guesthouse in the north area with no internet or parking. Is there more you would like to hear? Sentence3: I would be leaving from Peterborough. I need to arrive in Cambridge by 19:30 though. Sentence4: My departure time is flexible. Sentence5: The earliest train is TR3782 which leaves at 05:19, would you like me to book some tickets for you? Sentence6: That sounds great. Can I just get the postcode please? Sentence7: No, I believe that is everything. Thank you. Sentence8: I am also looking for a hotel called alpha-milton guest house. Sentence9: Ok, and where are you departing from? Sentence10: No, that won't be necessary. I would like to get the price, though. Sentence11: Not a problem, please contact us again if you need any further assistance. Sentence12: Of course. The price for the train running from peterborough to cambridge on Sunday is 13.20 pounds. Is there anything else I can assist you with? Sentence13: The post code of the alpha-milton guest house is cb41xa. Is there anything else I can assist you with today? Sentence14: Okay, there are a few trains available. What time would you like to depart? Question: Who has spoken the sentence 5? (A) User (B) System

SOLUTION: Answer: (B) System

PROBLEM: Sentence1: Yeah. The reference number is CVWAKCN2 Sentence2: Is one of them in the cheap price range? Sentence3: Yes, I'd like to book a taxi to go from the attraction to the restaurant. Sentence4: I'd be happy to find you a taxi, but first I will need to know what time you'd like to leave corpus christi. Sentence5: I don't mind an entrance fee. Could you actually give me the postcode for that college? Sentence6: Is an entrance fee okay? If so, the corpus christi college located at king's parade. Fee is 2 pounds. Would you like the phone number? Sentence7: I have booked you a taxi that will get you to the restaurant by 11:30. Their phone number is 07469156027. Is there anything else I can help you with? Sentence8: Yes. Can you please search for an attraction in the type of college? Sentence9: I've got three that fit that bill... the gardenia, la mimosa, and shiraz. Do you have a preference? Sentence10: I am sorry. There does not seem to be any matching your choices. Would you like to try another area or attraction? Sentence11: I would like to leave Corpus Christi College in enough time to arrive at the restaurant at the booked time of 11:30. Sentence12: Great, could I book a table of 5 for 11:30 on wednesday? If so, please provide me with a reference number. Sentence13: I'm looking for a Mediterranean restaurant near the centre of town. Sentence14: Thank you! Is there any entertainment in the same area as the restaurant? Sentence15: Yes, The Gardenia. Sentence16: Great! I'm glad I could be of assistance to you. Thank you for using our service. Sentence17: What is the car's contact number and type? Sentence18: Your taxi is a Black Audi and their contact number is 07469156027. Is there anything else I can help you with? Sentence19: That's everything, thank you! Sentence20: Corpus christi is located at king's parade, postcode cb21rh. Would you like any further information? Question: Who has spoken the sentence 11? (A) User (B) System

SOLUTION:
Answer: (B) System