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

[Q]: Sentence1: You're welcome, glad I could help. Sentence2: I personally like Parkside Pools. It's in the center of town, on Gonville Place. Sentence3: Any area is fine. Which of the 4 swimming pools do you suggest? Sentence4: It is cb11ly. Is there anything else I can help you with? Sentence5: Where will you be departing from? Sentence6: Thanks. That was all I needed. Goodbye. Sentence7: I am departing from Cambridge. Sentence8: I am looking for information on places to go in Cambridge. Can you help with that? Sentence9: My destination is london kings cross Sentence10: Can I get the postcode as well? Sentence11: I can help with that. Is there a particular area you're interested in? Sentence12: Yes, there are 4 swimming pools that match those requirements. Is there a particular area you would like to go to? Sentence13: There are 278 trains that meet that criteria. Would you like to narrow down your options by departure site, destination, or arrival time? Sentence14: I have made that reservation and your reference number is 1702SDBO . Sentence15: TR1502 arrives in london kings cross friday at 11:51. Would you like me to book you any seats? Sentence16: I also need a train leaving after 11:00 on friday Sentence17: What I'd really like is to find a swimmingpool. Sentence18: Yes book for 8 people and I need a reference number Question: Who has spoken the sentence 13? (A) User (B) System
[A]: Answer: (B) System


[Q]: Sentence1: I am sorry there is nothing that meets that criteria. Is there another type of food or area you would be interested in? Sentence2: Thanks, will you please book a table for 7 people on thursday at 13:00? Sentence3: I'm looking for a restaurant in the east. Sentence4: How about British food? Sentence5: There are nine restaurants in the east. Do you have a price range in mind? Sentence6: You are welcome. Enjoy your dinner! Sentence7: Booking was unsuccessful. can we book another day or time slot? Sentence8: Nope, that should be everything. Thank you so much for all of your help. Sentence9: Booking was successful for Thursday at 1200hrs , table for 7 at Grafton Hotel restaurant. Your Reference number is KQKTCX5Y . Is there anything else I can help you with? Sentence10: I would recommend you try Grafton Hotel Restaurant. As requested it is in the east and serves British food. Sentence11: I don't have a price range but I am looking for asian oriental cuisine. Is that possible? Sentence12: please try booking at 1200hrs and get me the reference number Question: Who has spoken the sentence 11? (A) User (B) System
[A]: Answer: (B) System


[Q]: Sentence1: I also want to dine at a moderate restaurant in the center area. Sentence2: Certainly, do you have an area, pricerange, or food type? Sentence3: What price range are you looking for? Sentence4: Okay, I've made the reservation for 1 at the varsity restaurant on tuesday at 11:30. The reference number is AXLJBTF7 Sentence5: I need it for 1 on 11:30 Tuesday. Sentence6: The Primavera is located in the centre area. I'll be happy to find a restaurant in that area for you. What type of food would you like? Sentence7: I would like something in the moderate price range. Sentence8: Your are all set, look for a grey volkswagon, if there are issues, the driver can be reached at 07015859463, can I assist with anything else? Sentence9: Can you help me find some local restaurants to dine in during my visit to Cambridge? Sentence10: I also want a taxi to go between those two places. Sentence11: welcome and thanks for using our services Sentence12: Something near the attraction primavera would be nice. Where is that located? Sentence13: I would suggest the varsity restaurant. Sentence14: The Primavera can be reached at 01223357708 Sentence15: Ok great and what times do you prefer? Sentence16: That is all thanks. Sentence17: What is the phone number for The Primavera? Sentence18: I don't care about the departure time, I just need to be at the restaurant by the booked time. Question: Who has spoken the sentence 9? (A) User (B) System
[A]:
Answer: (B) System