You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: There are two portuguese restaurants. Would you prefer the south or centre part of town? Sentence2: I don't care about the price range. Sentence3: Is there any place that serves BBQ around here? Sentence4: I am interested in Portuguese food. Sentence5: I'm sorry there are no bbq places in the city, Is there another type of food you would be interested in? Sentence6: Thank you for using the Cambridge restaurant system. Good bye. Sentence7: I don't care. can you give me one of the address ? Sentence8: Sure, nandos in the south and its phone number is 01223 327908 Question: Who has spoken the sentence 6? (A) User (B) System
A:
Answer: (A) User