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: Okay, the TR8944 leaves at 15:39 and arrives by 17:07. Would you like me to book tickets for you? Sentence2: There are 10 trains leaving fro Liverpool Street on Thursday. Did you have a departure time in mind? Sentence3: Okay I have booked you and your reference number is WLUOQKEV . Sentence4: rosa's bed and breakfast is in the cheap price range Sentence5: I'm looking for a train departing from london liverpool street leaving on thursday. Sentence6: Do you need a taxi? Sentence7: Goodbye, and thanks again. Sentence8: Yes, I don't want to leave for Cambridge until 15:00 at the earliest. Sentence9: Sure thing. Thanks for letting us help you today! Sentence10: Thank you. I also need a hotel in the south. Sentence11: then thanks for inquiring with us. Sentence12: I don't need a taxi, thanks for asking Sentence13: No price range but I do want a 4 start. Sentence14: Yes, for 6 people. Sentence15: What price range are you interested in? Sentence16: That sounds great. I'll need a reservation for 6 people for 4 nights on Thursday. Sentence17: I've gone ahead and booked that for you. Your Reference number is : EUZ34KY9 . Is there anything else I can assist you with today? Sentence18: No, that takes care of everything I need. Thanks! Question: Who has spoken the sentence 7? (A) User (B) System

Output: Answer: (B) System

Input: Consider Input: Sentence1: A hotel that has free parking and in the north part of town. I would like one in the moderate price range. Sentence2: Yes, I'd like the phone number and postcode. Sentence3: The phone number is 01223902091 and the postcode is cb43ax. Sentence4: Where do I get info on hotels? Sentence5: The Riverboat Georgina would work. It's in the north. Do you need more information? Sentence6: Yes please book the The Ashley Hotel for 7 people and 2 nights starting from wednesday. Sentence7: Yeah, happy to assist. Let us know if there is anything else you need. Sentence8: Have a great day! Sentence9: I really have to run. I'm late for work. Goodbye. Sentence10: Okay thank you that is all I need. Sentence11: You can get information here, through our help desk. Sentence12: I was successful in making your reservation. Your reference number is 2W4KNZYJ . Is there anything else I can help you with? Sentence13: I would also like to find a boat attraction in the same area. Sentence14: The Ashley Hotel and the Lovell Lodge meet that criteria, would you like me to book one of them for you? Question: Who has spoken the sentence 8? (A) User (B) System

Output: Answer: (A) User

Input: Consider Input: Sentence1: The first train leaving Stansted Airport after 17:45 leaves at 18:24. You'd arrive in cambridge by 18:52. Would you like me to book a seat on this train? Sentence2: Sorry about that. The postal code is cb58bs. Sentence3: There are many attractions. Churches, cinemas, colleges, and art gallery's. Do any of those sound appealing? Sentence4: To Cambridge, from Stansted Airport. Sentence5: Can you give me a few samples? I'll need the entrance fee, too. Sentence6: All Saints Church is free to get in as is Holy Trinity Church. Would you like more information? Sentence7: You are welcome. Enjoy your stay in Cambridge. Bye. Sentence8: Thanks so much for your help today, that was everything I needed. Sentence9: Yes. Postcode, phone number and entrance fee's if any of All Saints Church. Sentence10: Could you give me a little more information? Where will you be traveling to and from? Sentence11: Yes, I still need the postcode for All Saints Church. Sentence12: Yes please, what is the Train ID and price? Sentence13: That won't be necessary but thanks anyway. Although, I could use some help finding an attraction in the centre of town. Sentence14: Their phone number is 01223452587. There is no entrance fee. Is there anything else that i can help you with? Sentence15: I need a train leaving Thursday after 17:45. Sentence16: The train ID is TR5433 and the cost is 10.10 GBP per ticket. Would you like me to book this trip for you? Question: Who has spoken the sentence 9? (A) User (B) System
Output: Answer: (B) System