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

[Q]: Sentence1: I am having difficulty booking either of the. Can you find another day or time that would suit you? Sentence2: Absolutely. Can I suggest the Warkworth House at a moderate price range, or the Autumn House at a cheap price range. Do either of these interest you? Sentence3: OK, you're all booked for 3 nights at the Warkworth House, starting Thursday. Your reference number is AC1NVW47 . Can I help with anything else today? Sentence4: I would consider both. I need to book for three people and 5 nights starting on Thursday. Can either of them offer that? Sentence5: There are 6 possible places that fit your request. Would you like more information or to add additional search preferences? Sentence6: Good Afternoon, I am looking for a place to stay on the east side in a guest house Sentence7: Can you see if any of them offer free parking? Sentence8: You're welcome. Goodbye! Sentence9: I really need to stay during that time frame. Would you mind checking again? Sentence10: No, that will be all. Thanks! Sentence11: Honestly, any price range will do. Can you suggest one for me and help me with booking a room? Sentence12: 5 of the guesthouses offer parking. What is your price range preference? Question: Who has spoken the sentence 9? (A) User (B) System
[A]: Answer: (B) System

[Q]: Sentence1: That will work. What is the price and arrival time for that? Sentence2: Where would you like to travel from and to? Sentence3: Sure, I have 7 trains that would work. The closest to your requested time is the TR5110 that leaves at 20:34. Sentence4: That will cost you 16.50 pounds and you will arrive by 21:24. Sentence5: Certainly. Home from Home is a guesthouse on the north end of the city. It offers free internet and parking and is moderately priced. Would you like to book a room? Sentence6: The train should depart from cambridge and travel to peterborough. Sentence7: You too. Goodbye. Sentence8: I would like to book a train that is running on Tuesday and departs anytime after 20:15, can you help me with that? Sentence9: Thank you have a nice day. Sentence10: Your booking was successfull! Reference number is I5VKNKJ3 Sentence11: That is great. I also want to know about a hotel called home from home. Can you find it for me. Sentence12: Yes. I would like to book for 8 people for 3 nights starting from Saturday. Question: Who has spoken the sentence 9? (A) User (B) System
[A]: Answer: (B) System

[Q]: Sentence1: The cambridge belfry is 4 star hotel in the cheap price range in the west part of town. Do you want me to book this hotel? Sentence2: Great! I want to book it for 5 people and 3 nights starting from tuesday. Sentence3: Booking was unsuccessful. Do you want to try a different day? Sentence4: The hotel should be in the type of hotel and should have a star of 4, Sentence5: Booking was successful. Reference number is : TFAJJNJF Sentence6: Thanks, that's all I need. Goodbye. Sentence7: You're welcome! Have a wonderful day. Bye now. Sentence8: how about thursday? Sentence9: I need to be in the centre. Is there a guesthouse available, if there are no hotels? Sentence10: There is not a cheap hotel in the centre area. Is there another area I can look for you? Sentence11: The alexander bed and breakfast is a 4 star guesthouse, located at 56 saint barnabas road. Sentence12: I am looking for a place to stay. The hotel should be in the centre and should be in the cheap price range Question: Who has spoken the sentence 10? (A) User (B) System
[A]:
Answer: (A) User