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

Example Input: Sentence1: You're welcome, have a great day. Sentence2: I would like modern european food and in should be located in the centre of town. Sentence3: I would like a train that leaves from stansted airport after 16:15 Sentence4: I'd like a cheap one, I don't want to spend too much on food, I want to bring back as many knick-knacks as possible. Sentence5: Please get me their postcode instead Sentence6: How many tickets do you need me to book for the train? Sentence7: I actually don't need a ticket right now. Could you please tell me the price and travel time though? Sentence8: There are 8 results for European restaurants in the centre area, would you prefer an expensive, moderate or cheap price range? Sentence9: Yes, the postcode is cb58aq. Sentence10: The river bar steakhouse and grill meets all your needs. Do you want me to book? If yes, for how many, what day and what time? Sentence11: Absolutely. The TR5365 costs 10.10 pounds and has a travel time of 28 minutes. What else can I do for you? Sentence12: There's a train leaving stansted airport for cambridge every hour on Monday, by what time would you like to arrive? Sentence13: I will be traveling on monday and need to go to cambridge Sentence14: The earliest train is TR5365 that leaves the airport at 16:24 and arrive in Cambridge at 16:52. Do you need a ticket? Sentence15: Thank you, that will be all. Sentence16: I don't care. Give me the earliest one leaving after 16:15. Sentence17: What are would you like to eat? Sentence18: Yes please thank you. Can you also assist to find me a restaurant where i can dine in the Center. My preference is Modern European food. Sentence19: I also need a place to eat. Sentence20: What day will you be traveling, and where will you be heading to? Question: Who has spoken the sentence 6? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: That would be TR5906 at 21:39 on Monday. Sentence2: The first train after 21:15 works for me. I need to book it for three people, please provide the reference number. Sentence3: Thank you so much for all your help. Sentence4: Great, have a wonderful day! Sentence5: Will you be needing anything else today? Sentence6: I am interested in cinemas specifically. Sentence7: There are 70 trains that leave from London Liverpool Street to Cambridge, what day and time would you like to leave? Sentence8: Excellent. I'd also like a train please. One that leaves from london liverpool street to cambridge. Sentence9: I can certainly book that for you! However, could you let me know what day of the week you'll be travelling? Sentence10: I'm looking for places go to in the south of town. Sentence11: No thank you. That is everything I need at this time. Sentence12: I have booked 3 tickets for you for 49.8gbp payable at the station. your reference number is ETOI91ON Sentence13: The Cineworld Cinema is in the South part of town. Their phone number is 00872208000. Would you like their address? Sentence14: I will be traveling on Monday, and I will need the reference number as well. Sentence15: Great! Thank you. What a relief. Sentence16: Yes, please give me the address and postcode. Sentence17: It's located at cambridge leisure park, clifton way and the postcode is cb17dy Sentence18: The attraction types in the south area are theatre, park, nightclub, museum, cinema, and entertainment. Which one are you interested in? Question: Who has spoken the sentence 6? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: I can book you at the university arms hotel. It has a 4 star rating, free parking and wifi. Does this interest you? Sentence2: What will be the first day you will stay and how long will you be staying? Sentence3: I'm sorry but you'll have to book another day or a shorter stay. When would you like to stay? Sentence4: Yes. That would be great. Sentence5: Awesome, thanks! I think that takes care of everything I needed. Sentence6: Booking completed! Please look out for a Grey BMW, their contact number is 07130839627. Is there anything else I can help with? Sentence7: Certainly. I have many available. Is there a particular area you are looking in? I have several in the west and centre. Sentence8: Can you see if they have just 1 night available? Sentence9: I want to stay for 5 nights starting on Tuesday. Sentence10: Corpus christi is 2 pounds, which is in centre. Sentence11: Can you give me the entrance fee for one of the colleges in the centre? Sentence12: Okay great please enjoy your stay and don't hesitate to call us back if you need anything else. Sentence13: I am traveling to Cambridge and excited about seeing location attractions. Could you help me find a place to go, like a college? Sentence14: I need a taxi please between the 2 places. I want to leave the attraction by 2:30. Sentence15: Your booking was successful with a reference number of S1HTVV32 . Is there anything else I can do for you today? Sentence16: I'm also looking for a hotel in the centre. I don't want to stay in a guesthouse. It needs to be a hotel. Question: Who has spoken the sentence 3? (A) User (B) System
Example Output:
Answer: (B) System