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: In that case, you absolutely want to stay at the University Arms Hotel. It is in the Centre area. Would you like me to book a room for you? Sentence2: No just give me the address please. Sentence3: Great. Have a nice day. Sentence4: I don't really have a preference. Are there any art museums? Sentence5: Thank you. That is all i needed. Sentence6: Yes. I need a place to stay with free wifi Sentence7: Yes well what price range are you looking for and what area of town do you wish to stay in? Sentence8: it should be in the expensive price range. free parking and should have a star of 4 Sentence9: Cambridge Contemporary Art is a free museum located in the centre area of town. Their number is 01223324222. Do you need anymore information? Sentence10: I have 23 museums to choose from and most have a free entrance. Can you narrow down where you want to go? Sentence11: Yes the address is Regent Street. Sentence12: I'd like some information on places to go in town. I'd like to go to a museum with free admission. Can you make a suggestion? Please provide phone number. Question: Who has spoken the sentence 7? (A) User (B) System
Answer: (B) System