Q: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Sentence1: The restaurant is expensive. Sentence2: Booking was successful. The table will be reserved for 15 minutes. Reference number is : BLM7RVCW . Sentence3: I have 21 restaurants in the moderate price range but none serve seafood, would you like to try another type of food? Sentence4: thank you that will be all Sentence5: I have one, Loch Fyne. Would you like to make a booking? Sentence6: I'd like them for Friday at 18:15, please. Table for 6. Sentence7: I'm looking for a restaurant in the centre that serves seafood. Can you help? Sentence8: I would like to book somewhere with moderate prices. What other options do I have? Sentence9: I have the riverside brasserie located at doubletree by Hilton Cambridge Granta Place Mill Lane. Would you like reservations? Sentence10: How about one that serves modern european. Sentence11: yeah, i need reservations for 6 Sentence12: Of course I'd like the reference number. Sentence13: Yes please, do you know how much it costs? Sentence14: Would you like a reference number? Sentence15: When would you like those reservations? Sentence16: Have a great day! Question: Who has spoken the sentence 9? (A) User (B) System
A:
Answer: (B) System