You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: Could you recommend one for me and help me make a booking for sunday? Sentence2: Can you help me find an expensive restaurant in the center of town? Sentence3: I also need places to go that are in the same area as the restaurant and should be in the type of architecture. Sentence4: I have 4 people in my party. Can I book a table for 17:00 on Sunday? Sentence5: There are many options. Do you have any preferences on type of food? Sentence6: That's great. I think we'll try that out. Thanks for the info. Goodbye. Sentence7: No, I would just like to know what the fee is, if any? Sentence8: The old schools has a free entrance fee. Sentence9: No problem. Thanks for using our service today. Sentence10: How about Midsummer House Restaurant, it serves British food in centre. How many people are in your party? Sentence11: I booked that, and your reservation number is RBYPR70C . Do you need any more information about the restaurant? Sentence12: Does a entrance fee make any difference? Question: Who has spoken the sentence 10? (A) User (B) System
Answer: (A) User