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

[Q]: Sentence1: Yes I was able to locate 4. Can I book a table for you? Sentence2: Thanks so much! Sentence3: Is there anything else that I can book for you or assist you with for your upcoming trip? Sentence4: Are you looking for a Danish restaurant? Sentence5: Yes please in the same area and price range. Sentence6: For four, Thursday, 11:45. Sentence7: Booking unsuccessful. Would you like to try another restaurant? Sentence8: Thank you have a good day. Sentence9: Yes please. In the centre of town. Sentence10: Yes please,for tonight at 9 PM if possible. Sentence11: I will make a booking for you at hk fusion, but I do need to know what day and time you prefer, and for how many people. Sentence12: I am looking for an expensive Danish place. Sentence13: Is there an expensive chinese restaurant in the centre? Sentence14: I am sorry I have no listings for that type of restaurant, is there any other type of food you would like? Sentence15: Booked at ugly duckling. Reference number: EQFGNMFY . Table will be held for 15 minutes. Sentence16: That was all I needed today thank you! Question: Who has spoken the sentence 10? (A) User (B) System
[A]: Answer: (A) User


[Q]: Sentence1: Sorry about that, i'm leaving from norwich. Sentence2: Brookshite? Can you please repeat that? Sentence3: You are more than welcome! Sentence4: Ok. I can help you find a train. Where will you be departing from? Sentence5: ive boked that for you trainID departure destination day leaveAt arriveBy price duration book (optional) TR9900 norwich cambridge friday 05:16 06:35 17.60 pounds 79 minutes Sentence6: Thank you for your help Sentence7: I will be leaving from Brookshite. Sentence8: You're all set! The reference number is 44LHUSZT . Sentence9: I'm looking for a train going to cambridge. Sentence10: Yes please book that and I need the reference number. Question: Who has spoken the sentence 3? (A) User (B) System
[A]: Answer: (B) System


[Q]: Sentence1: NO thanks, no need to book for now. That is all of the info that I need. Sentence2: Moderately priced options in the north are abundant. Do you have any particular preferences or needs I should enter into the system to narrow it down? Sentence3: Ok great. Anything else you need? Sentence4: I would book from acorn guest house, with 4 stars. Is that okay? Sentence5: I am leaving from cambridge to bishops stortford. Sentence6: TR2730 is the train ID. May I go ahead and book that for you? Sentence7: The hotel should be a guesthouse, in the 4 star range Sentence8: That trip would be 10.10 pounds per ticket. Sentence9: Yes, that sounds good. Can you book that for Wednesday. I have 2 people and want to stay 3 nights. Sentence10: Yes, are there any trains leaving town after 13:45 on Friday? Sentence11: Can i have the price as well. Sentence12: The booking was successful. Reference number is : YH1D51ZS . May I help with anything else? Sentence13: Can I have the train ID and price for the first train after 13:45? Sentence14: I'm looking for a moderate priced place to stay in the north part of town. Sentence15: Can we try for 2 nights instead. I'll need the reference number too. Sentence16: No. Do you have any suggestions? Sentence17: Thank you goodbye. Sentence18: I have several trains that will work for you. You can arrive as early as 16:07 or as late as 24:07. Sentence19: Where will you be leaving from and going to? Sentence20: You are welcome, have a great trip. Sentence21: We have plenty of options. Any other preferences? Sentence22: Unfortunately, that booking was unsuccessful. Would you like to try a shorter stay? Question: Who has spoken the sentence 21? (A) User (B) System
[A]:
Answer: (B) System