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: I recommend the restaurant alimentum at 152 - 154 Hills Road. Sentence2: Okay. Enjoy your dinner. Sentence3: I was able to book yippee noodle bar, reference number is UCWKFIS4 . Sentence4: I need a place to dine, does not matter what type, in the moderate price range. Sentence5: I want to book a table for 2 people at 19:00 on sunday. Sentence6: I couldn't find an available table for you. Would you like to find another restaurant? Sentence7: Is there anything else I can help you with today? Sentence8: No that will be it. Thank you. Sentence9: Thank you for your time. I appreciate it. Sentence10: I guess that would be fine, I really want modern european food. Could you make sure it is in the same area and price range. Sentence11: Unfortunatly, I can not find anything available given your parameters. Sentence12: I need to find a restaurant that is moderately prices and serves modern european food. Sentence13: Have you made the reservation? Sentence14: No I would like you to make the reservation for me please. Question: Who has spoken the sentence 12? (A) User (B) System
Output:
Answer: (A) User