Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: I'm happy to be of service, and I hope you have a great day! Sentence2: The taxi should arrive by 20:00 and please also let me know what type of car will pick me up and give me the contact number of the driver. Sentence3: I need a taxi to pick me up at curry king. Sentence4: No that was all. Thank you for your help. Sentence5: Alright, and now I'll just need to know a time you either would like to arrive by or leave after please Sentence6: OK, and where are you headed and at what time? Sentence7: A white BMW will pick you up and the contact number is 07606671583. Can I help with anything else today? Sentence8: I want to go to the Lime House. Question: Who has spoken the sentence 5? (A) User (B) System
Output:
Answer: (B) System