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

Input: Consider Input: Sentence1: Sorry. TR2052 departs from leicester and the destination is cambridge. It leaves at 15:09 on Wednesday. Would you like me to book it for you? Sentence2: Yes, I only need 1 ticket for myself. Sentence3: There are 13. I could recommend Trinity College on Trinity Street. Or would you like information about one of the others? Sentence4: I would like to arrive by 17:00 in leicester. Sentence5: I would like help finding a college to visit in the centre of town. Sentence6: Of course. The address is Trinity Street, postcode is CB21TQ, and the entrance fee is one pound. Can I help you with anything else? Sentence7: Yes and please give me the reference number. Sentence8: OK, I've booked one ticket for you on TR0451 from cambridge to leicester, arriving at 16:06. Ref# 8OZNJHMO . Can I help you with anything else today? Sentence9: That sounds good. Could you give me the entrance fee, phone number, and postcode? Sentence10: Certainly. Just to verify, are you traveling alone? You would only like one ticket? Sentence11: TR3702 LEAVES AT 05:00 CAN I BOOK THAT ONE FOR YOU? Sentence12: How early do you wish to arrive? There are 11 trains that will get you there before 17:00. Sentence13: Thank you for using our service. Have a good night. Goodbye. Sentence14: Does this train go to Leicester from Cambridge? Sentence15: Yes I'm also looking for a train that leaves wednesday and arrives by 17:00. Sentence16: I think that is all I need, thank you. Question: Who has spoken the sentence 4? (A) User (B) System

Output: Answer: (A) User


Input: Consider Input: Sentence1: Thank You good bye Sentence2: Yes. Kymmoy is an expensive restaurant serving asian oriental food in the centre part of town. Sentence3: Thank you. May I have their phone number? Sentence4: Their number is 01223 311911. Will that be all today? Sentence5: Yes, thank you. Sentence6: There is not matching places that fits your request. Can i help you with something else? Sentence7: Are there any Asian Oriental restaurants in that price range? Sentence8: I'd like to find an expensive restaurant that serves venetian food. Question: Who has spoken the sentence 7? (A) User (B) System

Output: Answer: (B) System


Input: Consider Input: Sentence1: Great! Thank you so much for all your help. Sentence2: How about one night? Sentence3: Let's try the Hobson's House please. Sentence4: TR6688 leaves Cambridge at 8:36 for Norwich. Would you like to book this train now? Sentence5: Great. I'm also looking for a 3 star hotel with free parking. Sentence6: Yeah, could you book me a 3 night stay at Hobson's House? Sentence7: I'm looking for something moderately priced please. Sentence8: Ok. Do you need me to book that for you? Sentence9: There are three choices in that price range: Bridge Guest House in the south, Hamilton Lodge in the north, and Hobson's House in the west. Sentence10: We have five hotels matching those requirements. Do you have a preference for area or price range? Sentence11: That hotel isn't available for 3 nights? Are you able to shorten your stay? Sentence12: I'd like to go to Norwich on Monday. Sentence13: Ok. There are lots of options. Where would you like to go? Sentence14: When would you like to book your stay? Sentence15: Friday. For 7 people. Sentence16: It is our pleasure. Have a great day! Sentence17: I'm sorry TR6688 departs Cambridge at 18:36 and arrives in Norwich by 19:55. Sentence18: I need a train departing from cambridge after 17:45. Sentence19: Nah, thanks though. But if ya can tell me when it gets there that'd be good. Sentence20: The hotel has been booked for you for Friday night for a total of 1 night for 7 people. The reference number is RJEXYUD1 . Question: Who has spoken the sentence 14? (A) User (B) System


Output: Answer: (A) User