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: Thanks again for the help. Have a great day. Goodbye. Sentence2: I don't see any Cuban restaurants in the Centre. Would you like to look for Cuban restaurants in another location? Sentence3: Please let us know if we can help any further. Have a great day. Sentence4: There are 10 entries here. I recommend charlie chan. Sentence5: Hmm okay can you search for chinese food instead then please? Sentence6: Their phone number is 01223361763. Is there anything else I can do for you? Sentence7: You're welcome. If you need anything in the future, feel free to check back with us. Enjoy your stay!! Sentence8: That sounds great. Can I have their phone number and address? Sentence9: Thank you very much, that's all the information that I need. Sentence10: It is Regent Street City Centre, CB21DB Sentence11: Yes, I'm looking for a Cuban restaurant in the Centre. Sentence12: Yes, can I please get their postcode and address? Question: Who has spoken the sentence 9? (A) User (B) System
Output:
Answer: (B) System