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

[Q]: Sentence1: Booking was unfortunately unsuccessful. Can we try another day or a differen't time slot? Sentence2: Yes, please book a table for 4 people at 19:00 on Sunday. Thank you. Sentence3: Do you have anyplace that serves Chinese food? Sentence4: OK I will go with Italian food and pick the Pizza hut cherry hinton. Thank you for your help. Sentence5: Have a great day! Sentence6: Good news! Your reservation has been booked for Sunday at 18:00 for 4 people. The reference number is YJ0B5W19 . Is there anything else I can help you with? Sentence7: There are 2 options. Pizza hut cherry hinton serves Italian food and Restaurant alimentum serves modern European food. Sentence8: Would you like me to book that for you? Sentence9: I'm sorry, there are no Chinese restaurants located in the south that is moderately priced. Sentence10: How about 18:00? Sentence11: Hello. Could you help me locate a good moderate restaurant in the south of the city? Sentence12: That is all! Thank you! Question: Who has spoken the sentence 10? (A) User (B) System
[A]: Answer: (A) User

[Q]: Sentence1: Are there any that serve north american food? Sentence2: yes. please book for me a table for thee tommorow diner at 8 pm Sentence3: There phone number is 01223312598. Is there anything else I can assist you with? Sentence4: Yes, there is gourmet burger kitchen. It is an expensive restaurant. Would you like me to book it for you? Sentence5: Yes, the University Arms Hotel is located in the centre area and is on Regent Street. Would you like me to book a room for you? Sentence6: Okay can you also help me with a restaurant that serves Cantonese food in the city center? Sentence7: I just need their phone number. Sentence8: I need information on the university arms hotel. Sentence9: No I am good for now, thanks for all of your help. Sentence10: I need more info. Does the hotel have free parking and what is the price range? Sentence11: There aren't any restaurants in the city centre that serves Cantonese food. Would you like to try a different type of cuisine or try a different area? Sentence12: Thank you for contacting us and have a nice day. Sentence13: You asked about a hotel. Would you like to book a room or would you like me to help find a restaurant? Sentence14: It is in the expensive price range, but it does have free internet and free parking. Question: Who has spoken the sentence 9? (A) User (B) System
[A]: Answer: (B) System

[Q]: Sentence1: I don't see anything with that criteria. Perhaps you would like a different cuisine? Sentence2: I have many trains meeting your request. What is your destination and preferred departure and arrival times? Sentence3: Actually, that's all I needed. Thank you for the help! Goodbye. Sentence4: Great! Have a great day. Sentence5: Can you look for chinese food? Sentence6: Thank you for your assistance. Sentence7: I found a chinese restaurant named tang chinese located at Napier Street City Centre would you like to reserve a table? Sentence8: Sorry there is no panasian food in any area. Would like me to find a different restaurant? Sentence9: The arrival time is 17:27. Price is 16.60 pounds. Duration is 88 minutes. Sentence10: Was there anything else I can do for you today? Sentence11: Okay, Booking was successful. The table will be reserved for 15 minutes. Reference number is : MCSWQ2W5 . Is there anything else I can help you with? Sentence12: I have a train TR 2815 leaving cambridge at 15:59 on wednesday and arriving at 17:27 at london liverpool street. Would you like to book this? Sentence13: Can you help me find an expensive Panasian restaurant, please? Sentence14: I also need to train leaving from cambridge on thursday. Sentence15: book a table for 6 people at 14:45 on tuesday. Sentence16: My destination is London Liverpool Street, departing on Wednesday from Cambridge after 14:15. Sentence17: No, could you give me the price, arrival time, and overall travel time, please? Sentence18: Are you sure there isn't any in the centre? Question: Who has spoken the sentence 12? (A) User (B) System
[A]:
Answer: (A) User