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: If that has free wifi that'll work. Sentence2: Thanks! I'm also looking for a hotel near that restaurant. Sentence3: Yes, there is internet there. Would you like a booking then? Sentence4: They are expensive and can be reached at 01223866800. The address is 15-17 norman way, coldhams business park. Anything else? Sentence5: Yeah, could you book it for 8 people on Monday? I think 16:15 is when we want to be seated. Sentence6: No, that's all for me today! Thank you! Bye! Sentence7: The booking went through, your table is reserved for 15 minutes starting at 16:15. Reference number is BT75STQI . Sentence8: Okay, Yu Garden matches your specifications. Would you like me to book a reservation? Sentence9: Could you tell me the price, address and phone number? Sentence10: Can you help me find an expensive Chinese food restaurant? Sentence11: I'm interested in restaurants located in the East. Sentence12: What area would you like? There are nine results. Sentence13: I would recommend the Express by Holiday Inn Cambridge, should I book it for you? Sentence14: I hope you have a wonderful stay. Question: Who has spoken the sentence 1? (A) User (B) System
Answer: (B) System