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 can leave any time after 01:30. Can you send me the car type I can expect and the contact number? Sentence2: You're quite welcome. Goodbye! Sentence3: Before I can complete your request please let me know a departure and or arrival time. Thank you. Sentence4: You are all set. You will be picked up in a Blue Volvo at 1:45. The contact number is 07144891471. Do you need help with anything else? Sentence5: That will be all for now. Thank you for your time! Sentence6: Hi, I'd like to book a taxi from London Liverpool Street to Club Salsa. Question: Who has spoken the sentence 3? (A) User (B) System
Output:
Answer: (B) System