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

[EX Q]: Sentence1: Not really. Would you see if the highest rated, least expensive guesthouse has rooms for 5 nights for 6 people, beginning Wednesday? Sentence2: I would like to stay in a guesthouse that is in the south. Sentence3: I was able to book Rosa's Bed and Breakfast for you for 5 nights for 6 people starting on Wednesday. The reference number is RTITW2L5 . Sentence4: I am traveling to London Liverpool Street from Cambridge. Sentence5: There are 10 trains that meet your criteria. Do you have a preferred time that you would like to arrive by? Sentence6: Of course! The best option is the TR7092 leaving at 17:59 with a duration of 88 minutes. The price is 16.60 pounds. How else may I assist you? Sentence7: Yes, I was wondering if you could assist me in finding a train for Monday. Sentence8: There are 2828 trains available Monday. Where are you traveling to? Sentence9: I have found 29 hotels that fit your criteria for parking. What price range are you looking for? Sentence10: There are three guesthouses in the south with free parking in the moderate and cheap price ranges. Do you have a star or price range preference? Sentence11: I'd like to find somewhere to stay with free parking; I'm planning to rent a car during my stay. Sentence12: It was my pleasure to help. You have a great day. Goodbye. Sentence13: Thank you. I believe that is everything I need today. Sentence14: Yes, I need to leave after 17:30, please. I don't need tickets right now, I'll just need the price, travel time, and train ID. Question: Who has spoken the sentence 2? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: Yes, free internet is included at The Cambridge Belfry. Sentence2: Great, I'd like to book at room at The Cambridge Belfry. Sentence3: The cambridge belfry matches those requirements. Sentence4: I can book your room now. Thank you so much Sentence5: I am looking for a 4 star hotel that has free parking. Sentence6: Does it have free internet? Question: Who has spoken the sentence 5? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: No you can choose one for me. Sentence2: I am also looking for a place to stay. The hotel should be in the type of guesthouse and should have a star of 4. Sentence3: Thank you goodbye Sentence4: We have many to choose from, would you like a recommendation? or is there something specific you want? Sentence5: booking was successful, the total fee is 10.56 GBP payable at the station .Reference number is : QSAS4UNL . what else can i do for you Sentence6: Okay. Your booking was successful! Your reference number is JVTIZ6EI . Can I help with anything else today? Sentence7: No, I don't need to leave by a particular time. I want to arrive by 12:15 though. Sentence8: I'm leaving Ely and want to be in Cambridge by 12:15. Sentence9: Ok, I recommend Alexander Bed and Breakfast, it's a cheap 4-star hotel in the centre, would you like me to make reservations for you? Sentence10: Yes please, 4 people for 5 nights on saturday. Sentence11: I am getting the train schedule on my computer as we speak, where will you be coming from and what time? Sentence12: Yes, it would. Please make a booking for 3 people and provide the reference number. I will also need a place to stay. Sentence13: TR3052 will arrive at 11:52, would that work for you? Sentence14: Happy to be of help, and enjoy your stay in Cambridge! Sentence15: We have four trains arriving by 12:15. Is there any particular time you would like to leave by? Sentence16: I am looking for a train to cambridge that leaves on Saturday. Question: Who has spoken the sentence 2? (A) User (B) System
[EX A]:
Answer: (A) User