You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: I'm going to the slug and lettuce. Sentence2: I would like yo leave after 6:30. Sentence3: Enjoy your meal and thank you for using our service. Sentence4: I need a taxi departing from the gardenia. Sentence5: Your taxi booking is for a red lexus with the contact number 07652996605. Sentence6: I'd be happy to help. What time would you like to leave and/or arrive by? Sentence7: No thank you that will be all Sentence8: That's all, thanks! Sentence9: You're welcome. Can I help you with anything else today? Sentence10: I can help you with that. where are you going? Question: Who has spoken the sentence 5? (A) User (B) System
A:
Answer: (B) System