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: Sorry. TR2052 departs from leicester and the destination is cambridge. It leaves at 15:09 on Wednesday. Would you like me to book it for you? Sentence2: Yes, I only need 1 ticket for myself. Sentence3: There are 13. I could recommend Trinity College on Trinity Street. Or would you like information about one of the others? Sentence4: I would like to arrive by 17:00 in leicester. Sentence5: I would like help finding a college to visit in the centre of town. Sentence6: Of course. The address is Trinity Street, postcode is CB21TQ, and the entrance fee is one pound. Can I help you with anything else? Sentence7: Yes and please give me the reference number. Sentence8: OK, I've booked one ticket for you on TR0451 from cambridge to leicester, arriving at 16:06. Ref# 8OZNJHMO . Can I help you with anything else today? Sentence9: That sounds good. Could you give me the entrance fee, phone number, and postcode? Sentence10: Certainly. Just to verify, are you traveling alone? You would only like one ticket? Sentence11: TR3702 LEAVES AT 05:00 CAN I BOOK THAT ONE FOR YOU? Sentence12: How early do you wish to arrive? There are 11 trains that will get you there before 17:00. Sentence13: Thank you for using our service. Have a good night. Goodbye. Sentence14: Does this train go to Leicester from Cambridge? Sentence15: Yes I'm also looking for a train that leaves wednesday and arrives by 17:00. Sentence16: I think that is all I need, thank you. Question: Who has spoken the sentence 4? (A) User (B) System

SOLUTION: Answer: (A) User

PROBLEM: Sentence1: I have two restaurants that meet your needs, Graffiti and Travellers Rest. Would you like to make a reservation at one of those? Sentence2: Yes, I need to book a table for five people at 17:15 for this Thursday. Sentence3: Thank you so much. Have a nice day. Bye. Sentence4: A reservation at 16:15 was successful at Graffiti. Your reference number is VCCP7L4M . Is there anything else I can help you with today? Sentence5: You're welcome, have a good meal. Sentence6: Will you check 16:15? Sentence7: Are there any expensive British restaurants in town? Sentence8: There are 57 restaurants that match your specifications. Do you want anything more specific? Sentence9: Yes, I'd like to find one in the west side of town. Sentence10: I am unable to book a restaurant at that time on Thursday. Is there another day or time slot I can check for you? Question: Who has spoken the sentence 5? (A) User (B) System

SOLUTION: Answer: (B) System

PROBLEM: Sentence1: Okay, the phone is 01223304050 and postcode is cb12tz Sentence2: No, would you be able to look into another hotel for me? Do you have any hotels that have 0 stars and are in the moderate cost range? Sentence3: We have a three star and a four-star hotel. Did you have a preference? Sentence4: Great! I can help you with that. We have boats located in the east, north, and centre area. Which area you prefer? Sentence5: Okay, that's all I need. Thanks, bye Sentence6: i will be in Cambridge and i am looking for a boat Sentence7: I found a hotel that fits your need. Would you like for me to book a room? Sentence8: Thanks for the info! I also need a place to stay in the centre of town. I'm looking for something in the expensive price range. Sentence9: No thank you. I would just like the number and postcode for Cityroomz. Sentence10: Have a wonderful time. Sentence11: Okay, the Riverboat Georgina is located in the north on cambridge passenger cruisers, jubilee house. Post code is cb43ax and phone number is 01223902091. Sentence12: I do not care it should be in the centre and should be in the expensive price range. Sentence13: I have found 1 hotel that meets your needs. It is Cityroomz. Would you like me to book it for you? Sentence14: How about in the north? Question: Who has spoken the sentence 9? (A) User (B) System

SOLUTION:
Answer: (B) System