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'm also looking for a train. It should depart Cambridge after 14:15 and arrive in Norwich on friday. Sentence2: I have a 3 star hotel and a 4 star hotel both in the centre. Would you like to book one of them? Sentence3: I'm looking for a hotel to stay at. I want it to be at least 2 stars and in the center of town. Sentence4: TR8314 departs Cambridge at 14:36 and arrives in Norwich at 15:55. Would you like me to book a ticket for you? Sentence5: 1 ticket on TR8314 has been booked. Your total is 17.6 GBP, which you can pay at the station. Your Reference number is : H0JS8RMF . Sentence6: I am not finding a 2 star in the centre. Are you sure there is not another type of hotel you would like? Sentence7: Do you have anything that is 2 star rated in the centre? Sentence8: YES PLEASE. FOR 1 PERSON. Sentence9: I have 2 options - one is cheap and one is expensive. Which price range would you prefer? Sentence10: Thank you for calling. Have a great day! Goodbye. Sentence11: I do need a place to stay, so are there any 4 star hotels available? Sentence12: we got none. can i help you with anything else? Sentence13: That is all I need. Sentence14: cheap will work. can you book it for Wednesday? 1 person, 2 nights. I'll need the reference number too. Sentence15: Thanks, that was all I needed today. Goodbye. Sentence16: I was able to book a room at Alexander bed and breakfast, your reference number is VWF48IZM . Is there anything else I can help with? Question: Who has spoken the sentence 12? (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: No that is everything, thank you! Sentence2: You are welcome. Sentence3: Do you have any information on the Parkside Police Station? Sentence4: Thank you for calling. I can tell you that their phone number is 01223358966 and that they are located at CB11JG. Is there anything else? Question: Who has spoken the sentence 2? (A) User (B) System

SOLUTION:
Answer: (A) User