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

Sentence1: Sure. Please book for 4 nights starting on the same day. Sentence2: Perfect, thank you! I'm also looking for a guesthouse in the area, preferably in the North. Do you have an option that has free parking? Sentence3: I will go ahead and book that for you. Sentence4: Yes, please. I need 2 tickets. Sentence5: I was able to get 2 tickets. Your total is 28.64 GBP and will be payable at the station. Your reference number is 8UDKCNBU . Sentence6: You're welcome, it was a pleasure serving you! Sentence7: I am leaving from Broxbourne. Sentence8: There are 19 trains running from Broxbourne to Cambridge on Sunday. Is there a particular time when you need to travel? Sentence9: Booking was successful. Your reference number is : I78WB6O9 . Can I help you with anything else today? Sentence10: I'm sorry, how many people would you like to book the room for? Sentence11: I have just the train for you! TR9331 will arrive in Cambridge at 17:32, which is within your desired timeframe. Would you like me to book that for you? Sentence12: We have many in that area with free parking. Might I suggest the acorn guest house? Sentence13: From where are you departing? Sentence14: Can you get me one that'll arrive by 18:30? Sentence15: 2 people, 4 nights, for sunday. Sentence16: I'd like to get to Cambridge by train, but I'm afraid I need to travel on Sunday. Will that be possible? Sentence17: Thank you so much. Can I get the reference number also, please? Sentence18: No. Thanks a bunch! Goodbye Question: Who has spoken the sentence 9? (A) User (B) System
Answer: (B) System

Sentence1: I will take the phone number, entrance fee and address of the one you choose for me. Sentence2: I'm looking for some entertainment related places to go in the centre of Cambridge. Sentence3: Okay. How about a boat anywhere in town? Sentence4: I will choose for you the Cambridge punter, their phone number is 07807718591, they are found on 251a Chesterton road, they don't have an entrance fee. Sentence5: There are two boats in the centre, scudamores punting co and the cambridge punter. Would you like more information? Sentence6: I was unable to find any entertainment in the centre. Question: Who has spoken the sentence 1? (A) User (B) System
Answer: (B) System

Sentence1: The one in the centre is fine, I would like a table for 1 at 14:15 friday please. Sentence2: No thanks. Instead, could you tell me where to get Thai food? Sentence3: Unfortunately, I don't have any places that serve tea that are expensive. Did you want me to try a different price range or type of cuisine served? Sentence4: I found two Thai restaurants one is in the west and one in centre. Which would you prefer? Sentence5: Thank you for contacting us. Have a good trip to cambridge. Sentence6: Your table is booked for Friday at 14:15 for 1 person. The reference number is KSS0DI7C . It is only reserved for 15 minutes so please arrive on time. Sentence7: Thank you very much. That is all I'll need today! Sentence8: For how many people? Sentence9: It is an expensive restaurant yes Sentence10: Great can I reserve that for 1 person at 14:15 on friday please? Sentence11: I am looking for a place to eat at that is expensive and serves food with afternoon tea. Sentence12: Can you make sure that's an expensive restaurant? Question: Who has spoken the sentence 2? (A) User (B) System

Answer: (A) User