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 want to book a taxi. The taxi should go to riverside brasserie and should arrive by 19:30. Sentence2: Thank you so much goodbye. Sentence3: Booked a blue honda. Your contact number is 07886967603. Sentence4: I'll be leaving from Cambridge Arts Theatre. Sentence5: From where will you be departing? Sentence6: Have a wonderful day! Question: Who has spoken the sentence 5? (A) User (B) System
A:
Answer: (B) System