Detailed Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: What is the postcode? Sentence2: Bangkok city serves Thai food and is in the expensive price range. Sentence3: Great, can you please give me its address and phone number? Sentence4: Sorry, there are no expensive restaurants serving cantonese food. Would you like to look for something else? Sentence5: Bangkok City is at 24 Green street city and phone number is 01223 354382. Sentence6: Yes. An expensive thai restaurant would be good. Sentence7: Thank you, have a great day and enjoy your food. Sentence8: Thank you good bye. Sentence9: The postcode is C.B. 1 7 D.Y Sentence10: Hello, I am looking for an expensive restaurant that serves cantonese food. Question: Who has spoken the sentence 9? (A) User (B) System
A:
Answer: (B) System