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

[Q]: Sentence1: Okay. Riverboat Georgina is a boating attraction in the north. How about that? Sentence2: I don't have a preference. I just need it in the same area. Sentence3: What star rating do you prefer? Sentence4: Booking was successful! Your reference number is 8GLX5O9J . Is there anything else I can do for you? Sentence5: Yes please, I need 2 nights for 8 people and we will be arriving on Tuesday. Sentence6: Looking for a hotel that is in the north part of town. Sentence7: I recommend the Alpha-Milton Guest House on 63 milton road. Would you like me to go ahead and book you a room? Sentence8: The hotel should be in the north and doesn't need to include internet.and should be in the moderate price range Sentence9: Can you help me find an attraction to visit that is in the same area as my hotel? Sentence10: Absolutely, their phone number is 01223902091. Sentence11: Sure, there are four attractions in the north. Do you prefer boat, park, or swimmingpool? Sentence12: Thanks. That's all I needed for today. Sentence13: That sounds great, could I get their phone number please? Sentence14: Okay, have a wonderful visit! Question: Who has spoken the sentence 1? (A) User (B) System
[A]: Answer: (B) System

[Q]: 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
[A]: Answer: (A) User

[Q]: Sentence1: Is there a particular time you'd like to leave or arrive by? Sentence2: I just needed the info, no booking just yet. Thanks! goodbye. Sentence3: You are welcome. Have a wonderful day. Goodbye. Sentence4: Thank you for using or system. Good bye. Sentence5: Yes let's go ahead and make it for just 1 night then. Sentence6: Booking was successful. Your reference number is AAO2UA2S . Can I help you with anything else? Sentence7: Have a great day Sentence8: I have the a and b guesthouse that has wifi and is moderately priced. Sentence9: I actually need a place to stay as well. Something in the east please. Sentence10: No, that should do it! Thank you very much for your help. Sentence11: Booking was unsuccessful. Would you like to check in on a different day or shorten your stay? Sentence12: We have 6 guesthouses and one hotel on the eastside, you looking for any specific amenities or have a price range in mind? Sentence13: Thank you and have a great day. Sentence14: Sounds great, could you book it for 3 people for 2 nights starting on the same day as my train? Sentence15: Ok I can book you on TR8177 from Kings lynn to Cambridge on Tuesday. How many seats do you need? Sentence16: I'd like a train leaving on Tuesday from Kings Lynn, please. Sentence17: I would like to arrive in cambridge by 17:30. Sentence18: I am looking for something that is moderately priced with free wifi. Question: Who has spoken the sentence 10? (A) User (B) System
[A]:
Answer: (A) User