You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: ok it is a white audi and the contact number is 07088332164 Sentence2: My destination is Curry Garden. Sentence3: Glad to be of help! Goodbye. Sentence4: Thank you. That is all I need right now. Good bye. Sentence5: I need a taxi that leaves from funky fun house and arrives by 06:15 Sentence6: Certainly. What is your destination? Question: Who has spoken the sentence 5? (A) User (B) System
Answer: (B) System