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

[Q]: Sentence1: Do you need anything else? Sentence2: no that will be all thank you Sentence3: There are several swimmingpools as well as a park and a boat attraction in the north. do any of these appeal to you? Sentence4: sure, do you need some information? Sentence5: It doesn't matter when I arrive, but I need to make a booking for 5 people. And I definitely need a reference number for the booking. Sentence6: Okay, have a great day! Sentence7: The address is milton country park, milton, cb46az. Will that be all? Sentence8: No thank you. Sentence9: Booking was successful, the total fee is 151.19 GBP payable at the station, your reference number is EM5AYOET . Will that be all? Sentence10: Can you give me the address for the park? Sentence11: I am planning a trip in Cambridge. Sentence12: I need to book a train from Cambridge to Leicester, leaving after 20:00 on Sunday. Sentence13: There are 4 options leaving after 20:00, by what time do you want to arrive in leicester? Sentence14: Actually, I could use some help finding something fun to do in the north. Question: Who has spoken the sentence 5? (A) User (B) System
[A]: Answer: (B) System

[Q]: Sentence1: I sure can. I found a 3 star hotel and a 4 star hotel. Do you have a preference? Sentence2: Great, thank you for your help. Sentence3: Thank you , good day to you. Sentence4: You are very welcome! Is there anything else I can help you with? Sentence5: How about the Gonville Hotel located in the centre of town is in the expensive price range? Sentence6: Good afternoon, can you help me find an expensive place to stay in the town centre? Sentence7: It should be a hotel type hotel not a guesthouse Sentence8: Yes, that sounds good. Could you reserve a room for 5 people checking in on Saturday? I think we'll stay for 3 nights. Sentence9: Booking was successful. Reference number is : KRJNYV0Q . Sentence10: No, that will be all. Thank you. Question: Who has spoken the sentence 6? (A) User (B) System
[A]: Answer: (A) User

[Q]: Sentence1: Yes, that does sound good. Can you book a room for 7 people for me for 3 nights starting from Sunday? Sentence2: Booking was successful. Reference number is : 40N5I5FN . anything else i could help you with? Sentence3: The location doesn't matter. I just need a Chinese restaurant that is moderately priced. Thanks. Sentence4: No particular area but it should have free parking too. Sentence5: Hi, I'm looking for a 4 star place that offers free wifi. Sentence6: That is all for today. Thanks for all your help. Have a great day! Sentence7: There are 21 hotels that meet the description. Are you looking for one in a particular area? Sentence8: thank you and enjoy your stay in our lovely city! Sentence9: There are some excellent chinese restaurants in that price range. Do you have a location preference? Sentence10: Booking was successful. The table will be reserved for 15 minutes. Reference number is : RQHOVD73 . Is there anything else I can assist you with? Sentence11: great, thanks. I need also a chinese restaurant in moderate price range? Sentence12: Okay. I would recommend Archway House, which is at 52 Gilbert Road and has everything you're looking for. Does that sound good? Sentence13: The Jinling Noodle Bar meets your criteria, should I book it for you? Sentence14: Please do. I want it for 7 people on sunday at 16:00. Please provide the reference number Question: Who has spoken the sentence 4? (A) User (B) System
[A]:
Answer: (A) User