You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: What day would you like to start your reservation? Sentence2: Could you see if there is a restaurant that serves British food in the same area as the hotel? Sentence3: You are welcome. Sentence4: Three people please, on Monday at 18:30. Sentence5: Booked you a table at the oak bistro. Your reference number is SSUTW528 . Sentence6: I'm looking for hotels in the center. Sentence7: Yes, please book a room for 3 people and 5 nights. Sentence8: The University Arms hotel fits all of your criteria, would you like me to book a room? Sentence9: I would like for the hotel to have a 4 star rating and include free wifi. Sentence10: I don't have a preference. Sentence11: The Alexdander Bed and Breakfast is a good recommendation. It has four stars and affordable pricing. The Gonville Hotal is also a good choice. Would you like the address to either? Sentence12: Please start the reservation on Monday. What is the reference number? I also need a restaurant that serves australasian food at a moderate price in the same area as the hotel Sentence13: I am sorry but there are no restaurants in that area which meet your criteria. Would you like me to search for another type of cuisine? Sentence14: Certainly, we have either restaurant one seven, the oak bistro, the copper kettle, cotto. Can I book a table at one, if so how many will be dining? Sentence15: Thank you very much for your help. Sentence16: There are two, one in the expensive price range, one in the cheap price range. Which do you prefer? Question: Who has spoken the sentence 9? (A) User (B) System
A:
Answer: (B) System