Detailed Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: I would be happy to help with your request, but first I will need to know, what time you would like to leave/arrive? Sentence2: I need a taxi to come to royal standard and take me to maharajah tandoori restaurant. Sentence3: Booking completed! Booked car type : black volkswagen Contact number : 07248386378 Sentence4: I need to leave after 14:30. Question: Who has spoken the sentence 3? (A) User (B) System
A:
Answer: (B) System