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 am planning a trip in Cambridge. I'm looking for a train. Sentence2: no, that is all. Thanks, goodbye. Sentence3: It will cost you 17.90 Sentence4: Where are you departing from? Sentence5: I would suggest this one the golden curry. Sentence6: your all set! Reference # is TKNF8H2H . Anything else today? Sentence7: I am departing from Broxbourne and I would like the train to arrive by 10:00. What is the price for this? Sentence8: sure what day are you traveling? Sentence9: Have a great day. Sentence10: Please book that one for 8 people on Friday at 17:00. Sentence11: No thanks. I just need the price per ticket. Sentence12: The TR5570 train will work. Would you like me to book you passage? Sentence13: Okay thank you, I'm also looking for an Indian restaurant in the east that is expensive. Sentence14: I plan to travel on friday. Question: Who has spoken the sentence 6? (A) User (B) System

SOLUTION: Answer: (A) User

PROBLEM: Sentence1: Hi. Can you please help me find a restaurant that serves food from singapore ? I'd like it to be on the East side of town if possible. Sentence2: Thank you for using the Cambridge restaurant system. Goodbye. Sentence3: Yu Garden is located on the east part of town. Would you like the telephone and address? Sentence4: What is the address, phone number, and postcode? Sentence5: Can you help me find some Chinese food then? Sentence6: There are no restaurants serving Singaporean food on the east part of town. Sentence7: Thank you, goodbye. Sentence8: Yu Garden is located at 529 Newmarket Road Fen Ditton, C.B 5, 8 P.A, and the number is 01223 248882. Question: Who has spoken the sentence 3? (A) User (B) System

SOLUTION: Answer: (B) System

PROBLEM: Sentence1: I want to leave on Friday. Sentence2: I am looking for a train that goes to london liverpool street and leaves after 17:15. Sentence3: Nope, that is everything. Thank you so much! Sentence4: Unfortunately, the only train I have matching your criteria is one leaving 23:59 and arriving at 01:27 in the morning. Did you want to book that? Sentence5: Yes that's fine. I'll take 8 tickets for that train please. Sentence6: Alright, your train tickets have been booked and the reference number is NFA1DPXI . The train ID is TR3138. Is there anything else I can help you with? Sentence7: I can certainly help you with that. Which day did you have in mind to travel? Sentence8: Have a great day! Question: Who has spoken the sentence 5? (A) User (B) System

SOLUTION:
Answer: (B) System