Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: I need to book a taxi to take me to Riverside Brasserie at 11:15. Sentence2: I'm going to riverside brasserie. Sentence3: No, sorry I'm actually departing from saint johns chop house. Sentence4: I'm leaving from the Marriott Hotel in downtown Cambridge next to the theatre. Sentence5: All right, sir, you'll be picked up in a blue BMW. The contact number is 07348606520. Sentence6: Yes, but I want to leave after 11:15. When you book it can you get me the car type and contact number please? Sentence7: Is that the huntingdon marriott hotel? Sentence8: Sure thing, where are you going? Sentence9: welcome.enjoy the ride Sentence10: Ok, just to confirm, you'd like a taxi from saint johns chop house to riverside brasserie at 11:15? Sentence11: Where will you leave from? Sentence12: Thank you, that's all I need. Good bye. Question: Who has spoken the sentence 10? (A) User (B) System
Output:
Answer: (A) User