Given the task definition and input, reply with output. You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: Is there one you would recommend and the address please? Sentence2: Great, enjoy your trip! Sentence3: There are several museums in the center of town. Is there anything in particular you are interested in seeing? Sentence4: The Backstreet Bistro is in the town Centre. Do you want me to book you a table? Sentence5: I am looking for a restaurant that serves gastropub food and is expensively priced. Sentence6: Great, that's all I needed to know. Sentence7: No I will just go there. Can you help me find some museums in the centre of town? Sentence8: I have no preference, can you give me the postcode, phone number, and area for the closest one? Sentence9: The backstreet bistro phone number is 01223306306 and the post code is cb12qa. Sentence10: Thanks for using our system Sentence11: And what part of town is that in? Sentence12: I would recommend the Backstreet Bistro. Their address is 2 Sturton Street City Centre Sentence13: Thank you, goodbye again. Sentence14: I have 3 that match. One is in the east area and two are in the centre. Do you have a preference? Question: Who has spoken the sentence 6? (A) User (B) System
Answer: (A) User