You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: Okay. Thank you for calling. Sentence2: Thank you. I will not need their address. Goodbye. Sentence3: I would like one with 4 stars please. Sentence4: There are 11 that match your criteria. We can narrow that down a bit. Would you prefer the North or the East? Sentence5: I have you booked at Acorn guest house in north. Starting on Sunday for 4 nights for 8 people. Your reference number is ADGSM6SI . Would you like their address? Sentence6: Yes, I am looking for a place to stay tonight. The hotel should be like a guesthouse in looks and style. Ideally, I'd like one in the moderate price range, please. Sentence7: Any one is fine with me, can you just find one with an availability for 8 people for 4 nights starting sunday? Sentence8: Is there a specific area you would like to stay in? Also, do you need internet and/or free parking? Question: Who has spoken the sentence 7? (A) User (B) System
A:
Answer: (B) System