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: I'm open to any kind of food. I'm looking for something in the centre and on the expensive side. Sentence2: You are very welcome. Is there anything else I can assist you with? Sentence3: I'd also like to find somewhere to go in town. Sentence4: Okay, thank you so much for your help. Sentence5: That sounds lovely. There will be 2 of us at 16:45 on Tuesday please. Sentence6: You would love cineworld cinema Sentence7: We have several attractions to choose from, do you have a preference as to the type? Sentence8: We can narrow down our selection for you if we know the Restaurant chain and the kind of Food you prefer? Sentence9: I'm looking for an expensive restaurant in the centre of town. Sentence10: You are welcome enjoy. Sentence11: There are a lot of good choices like that. I can recommend The Cambridge Chop House if British food appeals to you. Would you like me to book you a table? Sentence12: That is all for now. Thank you for your help. Sentence13: Is there a cinema? Sentence14: The postcode for cineworld cinema is cb17dy Sentence15: I was able to get a reservation at that time. Your reference number for your reservation is RC16KLU4 . Is there anything else I can help you with? Sentence16: Thank you, I just need their postal code for now and I can take it from there. Question: Who has spoken the sentence 7? (A) User (B) System
Answer: (B) System