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

[EX Q]: Sentence1: Yes, I am also looking for places to go in town while we are visiting the area. Do you have anything of concert halls around the area? We love those. Sentence2: Yes, please, what is the phone number? Sentence3: I have that all booked for your stay. Your reference number for the room is ZUG88XKL . Is there anything else I can help you with? Sentence4: I am looking for a place to stay. It should be in a moderate price range and should be a star of 3. Sentence5: The phone number is 01223474144. Sentence6: Yes, I need a booking for 8 people for 5 nights starting Monday. Please include the reference number for the booking. Sentence7: Also the address to the man on the moon is 2 Norfolk Street. You have to call to inquire about the entrance fee. Have a Great day. Sentence8: We have one. The Man on The Moon. But it is located in the centre area of town. Would you like more information? Sentence9: Ok, perfect. Thanks! Sentence10: i have four results that match your request, do you need internet? Sentence11: I have the Hobsons House. It is a moderately priced guesthouse located in the west. Free wifi and internet. Can I assist you in booking a room? Sentence12: Internet is not necessary. But can you see if there is one in the west part of town and I would prefer a guesthouse. Question: Who has spoken the sentence 10? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: No, I'm not picky. Sentence2: I need a hotel with FREE parking Sentence3: The acorn house is moderately priced, 4 stars, and in the north. Sentence4: What is your arrival date and how many days will you be staying, please? Sentence5: I am looking for a place to stay. The hotel should have a star of 4 and should be in the type of guesthouse Sentence6: Thank you goodbye Sentence7: Okay. What part of town do you want to stay in? Sentence8: How about acorn house? They have excellent reviews. Sentence9: I'm sorry I don't need a reservation. Could you just confirm the price range, postcode and what area that is in? Sentence10: Thanks so much. I won't be needing anything further today. Sentence11: You read my mind. Yes, free parking. Sentence12: Do you have a specific pricerange you are looking for? Sentence13: Any part of town as long as it includes free parking. Sentence14: Yes, if Acorn House has free parking, please book my reservation. Question: Who has spoken the sentence 13? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: It's located in Postcode CB12TZ. They can be reached at 01223304050 if you have more questions. Would you like to book a room? Sentence2: Yes, the reference number is MU055FG9 . Can I help you with anything else? Sentence3: Can you give me the reference number for that please? Sentence4: Yes, I also need a hotel. It should be moderately priced, include free wifi and be in the centre of town. Sentence5: No that's all the info I needed I need a taxi between the hotel and restaurant though to get me there by 12:45. Sentence6: Can I get it's postcode? Sentence7: Yippee noodle bar on King Street meets your requirements if you want asian oriental cuisine. Sentence8: European, please. I want a table for 3 people at 13:45 on Saturday. Sentence9: Thank you for using our system! Sentence10: Can you tell me what type of hotel this is please? Sentence11: It is a moderately priced hotel in the city's centre. No stars. Sentence12: Can you try 12:45? Sentence13: I was able to book a yellow audi. The contact number is 07525058220. Sentence14: The galleria meets your needs. Would you like me to book it for you? Sentence15: I am in center area and need a moderately priced restaurant please. Sentence16: I have Cityroomz in the center that is moderately priced and offers free wifi. Would you like to book that? Sentence17: Yes, and can I get a reference number? Sentence18: We have 4 options for you. Would you prefer european or modern european? Sentence19: Okay, thank you, that's all I need. Sentence20: I was able to book a table for three at 12:45. Sentence21: Actually I'd like european food, please. Sentence22: Unfortunately the Galleria does not have any openings at that time. Would you like to try a different day or time? Question: Who has spoken the sentence 21? (A) User (B) System
[EX A]:
Answer: (B) System