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: I have a train leaving at 18:11. Will that do? Sentence2: You're welcome. Have a nice day. Sentence3: You train has been booked. Total fee is 19.6 GBP which is payable at the station. Your reference number is 5PVB9XYJ . Sentence4: Arrival time does not matter, just leave after 17:30 Sentence5: Milton Country Park is in the north and has free admission. Sentence6: Is there a time you would liek to arrive by? Sentence7: Hello, I'm looking for a place to go in the north. Could you suggest some places? Sentence8: That would work. Can you book that please? Sentence9: Perfect! That is all I needed. Thank you for the help. Goodbye! Sentence10: I need to book for two people and I need the reference number. Sentence11: Can I get the phone number please? Sentence12: Absolutely. Their phone number is 01223420060. Is there anything else I can assist you with? Sentence13: I'm leaving Kings Lynn on Wednesday. Sentence14: Yea I also need a train that goes to cambridge and should leave after 17:30. Sentence15: How many people would you like to book? Sentence16: What day will you be traveling, and where would you like to depart from? Question: Who has spoken the sentence 2? (A) User (B) System

SOLUTION: Answer: (A) User

PROBLEM: Sentence1: I found the Cambridge Belfry. It is located in the west of town. Would you like me to book that for you? Sentence2: No, again, that is all, thank you. Sentence3: No, thanks. That will be all. Sentence4: Absolutely, the fitzwilliam museum's phone number is 01223332900. Is there anything else I can help you with today? Sentence5: Have a great day! Sentence6: The fitzwilliam sounds good. Could I get the phone number? Sentence7: Can I assist you with anything else today? Sentence8: There are 11 museums in the centre of town. A few are the regency gallery, the fitzwilliam museum, castle galleries, and primavera. Sentence9: I'm wanting information about museums in the centre of town. Sentence10: I'm also looking for a hotel that is cheap and includes free parking. Question: Who has spoken the sentence 6? (A) User (B) System

SOLUTION: Answer: (A) User

PROBLEM: Sentence1: Thank you for using the Cambridge restaurant system. Goodbye. Sentence2: Do you have a certain price range you would like? Sentence3: There are several chinese restaurants. Would you like their phone number? Sentence4: Yes, and I need one of their names please. Sentence5: north part of town restaurant please Sentence6: Hakka's phone number is 01223 568988. Is there anything else I can do for you today? Sentence7: Hakka is a chinese restaurant in the north part of town. Sentence8: I don't care. Sentence9: Sound perfect! What is their phone number? Sentence10: Chinese Sentence11: What type of food would you like? Sentence12: thank you, goodbye Question: Who has spoken the sentence 5? (A) User (B) System

SOLUTION:
Answer: (B) System