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

Ex Input:
Sentence1: yes book for 4 people and 5 nights from sunday Sentence2: I hope you have a great stay. Goodbye. Sentence3: I would prefer a college in town centre. I'll need the phone and address also. Sentence4: I am also looking for a place to stay in the centre. Sentence5: No that will be it thank you for your help. Sentence6: Booking was successful. Reference number is : 7RA903FR . Can I help with anything else today? Sentence7: Ok, there are 13 to choose from. Some have entrance fees. Sentence8: I'm looking for an attraction in the category of college in the center of town Sentence9: I have the cityroomz hotel in the center. Would you like me to make a booking for you? Sentence10: Moderate range please. Sentence11: What price range you would like? Sentence12: Sure thing, Downing college is located at regent street and phone is 01223334860 anything else I can assist with? Question: Who has spoken the sentence 11? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: Thank you. May I have a street address for the police station? Sentence2: welcome. at your service next time Sentence3: Thank you goodbye Sentence4: Certainly. Their address is Parkside, Cambridge. Can I assist you further? Sentence5: I want to know where I would find the Parkside Police Station. Could you tell me? Sentence6: Their postcode is CB11JG, you can reach them at phone number 01223358966. Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: Your total is 17.89 GBP. You can pay that at the station. Your reference number is RAIYCNJU . Sentence2: I need a train after 21:15. Sentence3: Ok great. What day will you be traveling? Sentence4: No, I have no preference. Just pick one. That will be fine. Sentence5: could you provide details for something in the cheap price range? Sentence6: I hope you not going to sit in your room by yourself for 5 days, are you sure that you dont want to know about a restaurant or attraction? Sentence7: thank you for using this service good bye Sentence8: I have the TR9688, which leaves at 12:32. Would you like to book this train? Sentence9: that is all i needed for today. thanks alot Sentence10: Perfect. I'll need a room for myself, for five nights on tuesday. Sentence11: I need tickets for one person. Sentence12: Actaully i will be on business so not out much but I do need a train, to cambridge leaving after 21:15 Sentence13: Great, thanks for that information on the train. Can you book for a train leaving after 21:15? Sentence14: How many tickets do you need? Sentence15: Yes, I need a train going to cambridge leaving after 21:15 on tuesday departing from broxbourne. Sentence16: The TR3112 arrives at 22:32. Sentence17: There are 33 cheap hotels with wifi in Cambridge. Do you have a particular area you are interested in? Sentence18: There are 3 trains leaving an hour apart starting at 21:32. The travel time is 60 minutes and costs 17.90 pounds. Would you like me to book one? Sentence19: I need a place to stay that has free wifi. Sentence20: Nope, that's it. Thanks! Sentence21: I have 32 places that offer wifi, do you have a price range preference? Sentence22: Perfect, you are all set for Alexander Bed and Breakfast on Tuesday, your reference number is 22DG5770 . Is there anything I can help with today? Sentence23: I recommend alexander bed and breakfast on 56 saint barnabas road would that due? Sentence24: No thank you. I just need the train ID and arrival time for one of them. Question: Who has spoken the sentence 17? (A) User (B) System

Ex Output:
Answer: (B) System