You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: That's all I needed today. Thanks for your help! Sentence2: It was my pleasure! Have a nice day! Sentence3: I need to book a taxi from Kings College to the lensfield hotel. I need to arrive by 10:00 and need the car type and contact number. Sentence4: The contact number is 07502362913. It will be a white audi. Is there anything else I can help you with? Question: Who has spoken the sentence 3? (A) User (B) System
A:
Answer: (B) System