Q: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Sentence1: It doesn't look like we have any expensive 4 star guesthouses. There are some which are moderate if you are interested. Sentence2: I would like to check in on saturday. We would need 4 nights for 8 people. Sentence3: Hi. I am looking for a hotel that is a guesthouse that has free parking. Can you help me find one? Sentence4: Yes, can I get the phone number and address for the Cambridge and County Folk Museum? Sentence5: I have booked you at the archway house. The reference number is 61O3SUCK . Can I help you with anything else? Sentence6: I have booked you. Thank you. Goodbye. Sentence7: The Archway House is very nice. Would you like me to book a reservation? Sentence8: The phone number for the cambridge and county folk museum is 01223355159, and the address is 2-3 castle street. Anything else? Sentence9: Yes and can i get the reference number? Sentence10: Moderate will do. Can you give me more information please? Sentence11: Sure, how about an expensive, four star guest house? Sentence12: There are 21 options available. Do you have any other preferences to narrow down the search? Sentence13: No, that will be all. Sentence14: What day would you like to check in at the guesthouse? Question: Who has spoken the sentence 9? (A) User (B) System
A:
Answer: (B) System