You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Ex Input:
Sentence1: No but I do need a train that will depart from peterborough and should go to cambridge. Sentence2: When would you like to depart or arrive? Sentence3: The ticket price is 16.50 pounds. Would you like me to book that for you? Sentence4: No than kyou. Sentence5: And how much is a ticket? Sentence6: The duration of the train ride is 50 minutes. Sentence7: TR8509 will leave Peterborough at 15:19 and arrive in Cambridge at 16:09. Would you like to book tickets on this train? Sentence8: Ok! Have a great day! Sentence9: Yes, there is. It's located in the centre area and has free admission. Would you like more information about it? Sentence10: Are you sure that there is absolutely nothing else that you need? Sentence11: No, I think I'll hold off on that. That's it for today. Thanks for your help. Have a great day. Sentence12: maybe, what's the duration of the train ride? Sentence13: I need the attraction type and address. Sentence14: I'd like to depart after 15:00 on thursday no preference on arrival. Sentence15: The Scott Polar Museum is a museum located on Lensfield Road. Would you also like their phone number? Sentence16: A friend told me about an attraction called the scott polar museum. Question: Who has spoken the sentence 8? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: Please contact the Parkside Police Station at 01223358966. Sentence2: Help me please, i just been robbed and don't know what to do. Sentence3: Thanks, that's all. Good bye. Sentence4: Thank you for using our services. Sentence5: The postcode is CB11JG. Do you need further assistance? Sentence6: Thank you, what's the postcode? Question: Who has spoken the sentence 1? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: For indian food, I have the Curry Prince restaurant and Rajmahal. They are both moderately priced and located in the east. Can I tell you more about one of those? Sentence2: Yes. Give me the address and postcode for one of those, please. Sentence3: Is there one with unusual food? Sentence4: Enjoy! Goodbye! Sentence5: Ok, tell me whats available in Indian food. Sentence6: I'm looking for a place to dine in the moderate price range in the east. Sentence7: No, that's all the information I need. Thanks for your help! Sentence8: There are 3 moderately priced restaurants on the east side. Do you prefer Indian or Italian food? Sentence9: The address and postcode for Curry Prince is 451 Newmarket Road Fen Ditton, cb58jj. Is there anything else I can do for you? Sentence10: No, I'm afraid Indian or Italian are the only options. Question: Who has spoken the sentence 5? (A) User (B) System

Ex Output:
Answer: (B) System