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

Ex 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

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: I am interested in finding a great nightclub to take a friend to. Sentence2: I've booked a table for 5 on Monday at 17:30. The reference number is MUBJSMLX . Is there anything else I can help you with? Sentence3: I have found 4 restaurants. Do you have a preference of area? If not that Kohinoor in the centre is very popular. Sentence4: Great that was all that I needed today, thank you. Sentence5: Cambridge has lots of great options. Club Salsa is quite popular and is in the centre. Sentence6: I have arranged for a black Honda to have you arrive at Kohinoor by 17:30. The contact number for the Taxi is 07997403672. Is there something else I can assist with? Sentence7: That sounds great. How much is the entrance fee? Sentence8: Perfect, can you also help me find a place to eat that is cheap and serves Indian food? We are looking to accommodate 5 people at 17:30 on Monday. Sentence9: Just book it on Monday please, for 5 at 17:30. Sentence10: Perhaps their phone number? Sentence11: The phone number is 07782218745. Sentence12: The Club Salsa entry fee is 5 pounds. Can I help with anything else? Sentence13: You're welcome! Have a good day. Sentence14: We need a taxi from Club Salsa that will get us to Kohinoor in time to eat. Can you make that happen? Question: Who has spoken the sentence 13? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: I have found 5 that fit that description. Is there a particular area you would like? Sentence2: I would like to book a table for 6 at 15:15 on Tuesday. Sentence3: Yes. I would like it to be in the expensive price range. Sentence4: Can you find me a Chinese restaurant please? Sentence5: Sure. There are 17 chinese restaurants in town. Are you looking for a certain price range or location? Sentence6: Thank you for contacting us and enjoy your meal at the hakka. Have a great day. Sentence7: Yes, thank you. That's all for now. Bye! Sentence8: I was able to get a table at Hakka in the north. The reference number is 7KW8MVL3 and they'll keep the table for 15 minutes. Does that suit you? Question: Who has spoken the sentence 1? (A) User (B) System

Ex Output:
Answer: (B) System