Hello how may I help you? I am librarian bot or librot Hi! I need to know about my late fees. what is your card number? My card number is LB2023. You owe $400 dollars for borrowing "50 Shades of Grey" I think there must be a mistake. I shouldn't be paying $400. Okay let me check again. You owe $20 dollars. Okay thanks. Can I use my credit card as payment? Yes you can use your credit card. Okay. Let me put my details. Okay details confirmed. Your credit card will be charged $20 dollars.