Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: No, that's all. Thank you. Sentence2: I am looking for a place serving christmas food in the centre of town. Sentence3: I sure can. The address is Corn Exchange Street, and the phone number is 01223308871. Can I help you with anything else today? Sentence4: Are there any other options for gastropub? Sentence5: Yes, we have nine Indian restaurants in the center of town. Do you have a preference in price range? Sentence6: Do you have any Indian restaurants? Sentence7: In that case, could you give me the address and phone number? Sentence8: The Cow Pizza Kitchen and Bar is the only gastropub in all of Cambridge. Sentence9: The Cow Pizza Kitchen and Bar would be perfect for you! Would you like for me to book you a table? Sentence10: It doesn't look like there are any restaurants of that type. Would you like to try a different cuisine? Sentence11: Thank you for calling us today. Goodbye. Sentence12: I actually would prefer gastropub type food and preferably in the moderate price range. Question: Who has spoken the sentence 9? (A) User (B) System
Output:
Answer: (B) System