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

Sentence1: I have 23 places. What area would you prefer to be in? Sentence2: There is Cafe Jello Gallery in the west, Cambridge Artworks in the east and Broughton House Gallery in the centre. Does any of those sound appealing? Sentence3: Just the price range and postal code please. Sentence4: Cafe jello gallery postcode is cb30af and the entrance is free, is there anything else I can do for you? Sentence5: Here is the address 529 Newmarket Road Fen Ditton. Sentence6: Do you have an attraction type preference? Sentence7: You're welcome! Enjoy your visit! Sentence8: that is it. thank you for helping me Sentence9: Yes, I would like to see a museum. Can you tell me the postcode and entrance fee for it? Sentence10: I have no particular area preference. Can you list a few for me to select from? Sentence11: Yes could I have their postcode and entrance fee? Sentence12: Can you give me more information about Yu Garden. Sentence13: Of course! It is a chinese cuisine restaurant located in the east. Anything else you would like to know? Sentence14: I am traveling to Cambridge and excited about seeing local tourist attractions, can you help? Sentence15: I am also looking for the restaurant Yu Garden. Sentence16: Their price range is expensive and the postcode is cb58pa. Are you sure that is all you needed? Question: Who has spoken the sentence 13? (A) User (B) System
Answer: (B) System

Sentence1: Yes, all of the listed entrance fees are 5 pounds. The Club Salsa is nice. Sentence2: Have fun! Goodbye! Sentence3: Club Salsa's address is 1 Station road and their phone number is 07782218745. Sentence4: No thanks. That's it. Sentence5: Location doesn't really matter. Is there an entrance fee? Sentence6: Yes, would you like to find a nightclub in the centre or south part of town? Most of them are in the centre. Sentence7: Club Salsa sounds right up my alley. Can I get the address and phone number please? Sentence8: Can you find information about nightclubs? Sentence9: You're welcome. Can I help you with anything else? Sentence10: Okay, great! Thanks for your help! Question: Who has spoken the sentence 7? (A) User (B) System
Answer: (B) System

Sentence1: I was looking for Chinese food. Sentence2: You can try sesame restaurant and bar at 17 Hills Road City Centre. The phone number is 01223358899. Would you like to make a reservation? Sentence3: We have several restaurants serving Chinese food in town. What price range and part of town would you prefer? Sentence4: Any fancy restaurants in town? Sentence5: Alright great, that's all I need thank you! Sentence6: You are very welcome. Enjoy your dinner. Sentence7: I made those reservations and your reference number is DL52IYMD . Sentence8: Yes, please book it for 2 people on Sunday at 17:15. Sentence9: I would like expensive Chinese food located in the centre of town please. Sentence10: We have tons of options! Whats your favorite type of food? Question: Who has spoken the sentence 1? (A) User (B) System

Answer: (B) System