Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: I'm sorry I need to change that. I need the taxi to depart from kings lynn train station and go to cherry hinton water play. Sentence2: What will be your destination? Sentence3: Nope, that's all I needed today. Thanks! Sentence4: Okay. I've booked a taxi that will pick you up at 21:30. Look for a Red Skoda and the contact number is 07797598861. Anything else? Sentence5: You are welcome! Have a good day. Sentence6: i want to book a taxi. The taxi should leave after 21:15 and should depart from backstreet bistro. Question: Who has spoken the sentence 5? (A) User (B) System
Output:
Answer: (B) System