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

[Q]: Sentence1: You're welcome and thanks for using our help desk. Goodbye. Sentence2: Thanks for the recommendation. That's all the help I need today. Sentence3: I'm looking for the entrance fee for Castle Galleries. Sentence4: Yes, i would like help locating an attraction. Sentence5: OK - what type of attraction are you looking for, and in what part of town? Sentence6: Their entrance fee is free. Question: Who has spoken the sentence 1? (A) User (B) System
[A]: Answer: (B) System


[Q]: Sentence1: Goodbye and have a nice day. Sentence2: Little Seoul's address is 108 Regent Street City Centre. Their phone number is 01223 308681. Sentence3: Thank you, goodbye. Sentence4: There are several restaurants located in the centre, which kind of food do you prefer? Sentence5: is there a restaurant in the Centre? Sentence6: Little Seoul serves Korean food in the city's centre. It is expensive but very classy. Would you like to know more about it? Sentence7: I would like one serving korean food, possible. Sentence8: Can I get the address and phone number? Question: Who has spoken the sentence 3? (A) User (B) System
[A]: Answer: (B) System


[Q]: Sentence1: ask serves italian food and is in the cheap price range. Would you like their location? Sentence2: I am looking for a restaurant in the cheap price range that serves Italian food. Sentence3: Ask is located at 12 Bridge street city centre. Their telephone number is 01223 364917. Sentence4: Have a good day! Goodbye. Sentence5: Thank you, goodbye. Sentence6: Yes please, I would like their address. Sentence7: I don't care which area. Sentence8: There are five restaurants in the cheap price range that serve Italian food. What area are you looking for? Question: Who has spoken the sentence 4? (A) User (B) System
[A]:
Answer: (A) User