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

[EX Q]: Sentence1: You're welcome. Can I help you with anything else? Sentence2: That is all. Thanks Sentence3: The post code is CB11JG. Sentence4: Thank you, what's the post code? Sentence5: Thank you for your help Sentence6: Cambridge, parkside police telephone number 01223358966. Sentence7: I need to get to the nearest police station, can you assist me? Sentence8: Okay. Have a good day and thanks for using our system. Question: Who has spoken the sentence 4? (A) User (B) System
[EX A]: Answer: (A) User

[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: Do they have any available tables for 3 at 20:15 that day? Sentence2: You're welcome! Have a great day! Sentence3: The latest train from Stevenage to Cambridge on Friday that will arrive by 16:30 leaves at 13:54 and arrives at 14:43. Would you like me to book it? Sentence4: I need a train that arrives in Cambridge by 16:30. Sentence5: On what day are you traveling? Sentence6: 12.80 pounds per person, do you still want me to book you? Sentence7: No but I need information on a restaurant called loch fyne. Sentence8: We can certainly book that for you. Would you like a reservation and a booking for the train? Sentence9: What would you like to know? Sentence10: Please book me a table for the restaurant and provide the reference number. Sentence11: that is fine. how much is the ticket? Sentence12: No, that's all I needed today. Thanks for your help! Sentence13: Booking was successful. The table will be reserved for 15 minutes. Reference number is : ENJNFM36 . Can I be of any further help to you today? Sentence14: Friday, departing from Stevenage. Question: Who has spoken the sentence 9? (A) User (B) System
[EX A]:
Answer: (B) System