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

Sentence1: No that will be all! Thank you very much! Sentence2: Done! Your table will be reserved for 15 minutes. Your reference number is 5XFZM2KU . Is there anything else that I can help you with? Sentence3: Sure, they are all expensive though. I love Tandoori Palace located at 68 Histon Road Chesterton. Sentence4: Is there anything else you need? Sentence5: They do not have an entrance fee listed, but you can always call and find out. Sentence6: Thank you for using our services. Have a great day! Sentence7: Okay, thank you for your help! Sentence8: Nevermind - I don't need the taxis after all. Can you help me find a place called tenpin, instead? Sentence9: Can you book a reservation for 8 at 14:45 on Friday? Sentence10: Can you provide me with the telephone number and book two taxi cabs to the restaurant Sentence11: Can you tell me what their entrance fee is? Sentence12: is there anything else i can help you with? Sentence13: Tandoori Palace's phone number is 01223506055. Please give me the taxi departure day and time and I'll be more than happy to book one for you Sentence14: Can you help me find a indian restaurant in the west? Sentence15: Tenpin is an entertainment venue in the south. They are located at Cambridge Leisure Park, Clifton Way. Their postcode is cb17dy. Their phone number is 08715501010. Sentence16: That sounds perfect! Thank you. Question: Who has spoken the sentence 15? (A) User (B) System
Answer: (B) System

Sentence1: I believe that's all I need. Thanks! Sentence2: It is an expensive restaurant on the west side of town. Would you like me to reserve a table for you? Sentence3: Yes I have many options for you. How about the Tandoori Palace? Sentence4: I'm looking for an Indian restaurant in the west. Sentence5: That might work. What is the price range of Tandoori Palace? Sentence6: Sure, it is located at 68 Histon Road Chesterton in the cb43le post code. Can I help with anything else today? Sentence7: You are welcome. Have a nice day. Bye. Sentence8: No that's OK, but could you give me their address and postcode please. Question: Who has spoken the sentence 1? (A) User (B) System
Answer: (B) System

Sentence1: No, I don't think so. Thanks for your help! Sentence2: I have 4 museums in the east. Cambridge Artworks, Cambridge Museum of Technology, Gallery at Twelve a High Street, and Saint Barnabas Press Gallery. Which would you like? Sentence3: Cambridge. And I'd like to leave after 18:00. Sentence4: Hey. I'm looking for a train to stevenage Sentence5: TR9082 leaves at 19:21 the cost is 12:80 pounds, do you want me to book you? Sentence6: Yes. I'm also looking for a museum on the East side of town please. Sentence7: What day will you be traveling on? Sentence8: I would like to travel on Monday evening. Sentence9: I would like Cambridge Artworks. Can you give me the phone number and postcode for it? Sentence10: Thank you goodbye Sentence11: you're so welcome, is there anything else i can help you with? Sentence12: Where will you be departing from? Sentence13: Thank you for your help. Sentence14: Phone is 01223902168 and the postcode is cb13ef. Question: Who has spoken the sentence 6? (A) User (B) System
Answer: (A) User