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: Would that be London Liverpool or London Kings Cross? Sentence2: We don't have any trains going from Ely to London Liverpool or London Kings Cross. Do you need anything else? Sentence3: I will be leaving from Ely and going to london. Sentence4: Are you sure you don't have a preference? Sentence5: Either one is fine with me. Sentence6: On Saturday I need a train that will arrive by 21:45. Sentence7: Yes I'm sure. I need to book that for 5 people. Sentence8: Can you tell me where you will be departing from and heading to? Question: Who has spoken the sentence 6? (A) User (B) System

SOLUTION: Answer: (A) User

PROBLEM: Sentence1: I need one ticket please and for leaving at 16:15,thank you. Sentence2: Thank you! That's all for me. Goodbye! Sentence3: I need a Tuesday train to from Peterbourough. Sentence4: Glad I could help. Let me know if there's ever anything else you need. Sentence5: Sure they do have internet and their phone number is 01223327978. Sentence6: Let me confirm this information: Are you leaving from Peterborough at around 16:15 and going to Cambridge on Tuesday? Sentence7: Right now I just need their phone number and to know if they have internet or not please. Sentence8: There's a train, TR5267, which leaves Peterborough at 16:19, arr. Cambridge 17:09. It's 16.50 pounds per ticket. Would you like to book it? Sentence9: Could you help me book a hotel called el shaddai? Sentence10: What day would you like to stay at the el shaddai? Sentence11: Yes, that's mostly right, but it should be after 16:15, please. Sentence12: Yes, please book it for one person and provide the reference number. Sentence13: All booked. Your reference number is LBUHU6M3 . Is there anything else I can help you with? Sentence14: If your are going to cambridge the first train leaves at 05:19 and the last at 07:19, any particular time and how many tickets please? Question: Who has spoken the sentence 10? (A) User (B) System

SOLUTION: Answer: (A) User

PROBLEM: Sentence1: Looking for a train that leaves on saturday Sentence2: TR1958 leaves at 8:40 - would you like tickets on that train? Sentence3: Leaving Birmignham New Street, to Cambridge. Sentence4: Oh, bummer. How about 20:00? Sentence5: You're welcome. Have an awesome day. Sentence6: I would need to leave after 08:30. Sentence7: Not yet.. just needed the ID. Also, looking for a place to dine in the center of town at a moderate price range. Sentence8: That works for me. Book it for 3 people at 21:00 on the same day. Sentence9: That worked! Your reference number is WASWNFH0 . Sentence10: Thank you. That is all. Sentence11: I have many delicious options. How does Cotto sound? It's British food. Sentence12: Unfortunately, there is no availability for that time. Did you have a different time in mind? Sentence13: No problem. Any preference on times? Sentence14: Yes, there are 404 trains. Would you like to tell me more to narrow your search? Question: Who has spoken the sentence 7? (A) User (B) System

SOLUTION:
Answer: (B) System