You will be given a definition of a task first, then some input of the task.
You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: Nothing else today, thanks. Sentence2: The cambridge book and print gallery is in the west side of town. What else can I help you with? Sentence3: I have 3 listings that fit that criteria. Would you need parking as well? Sentence4: Which section of the town could you like the hotel to be in? Sentence5: Yes, the Warkworth house's postcode is cb11ee. Sentence6: In the east please. Sentence7: I have 4-star guesthouses in the east. Warkworth House is a great place to stay. Sentence8: Okay, thanks. I'm also looking for information on cambridge book and print gallery. What area is it in? Sentence9: Parking isn't necessary, but I would like a 4-star hotel if possible. Sentence10: You're welcome. Have a nice day. Sentence11: I'd like to find a moderately priced hotel with free wifi. Sentence12: Can you give me the postcode for that hotel? Question: Who has spoken the sentence 9? (A) User (B) System
Output:
Answer: (B) System