Yes, United Airlines, I'm Sure
Its bad enough that United Airlines forces you through their upsell screens, but to make matters worse they're starting to ask if "You're sure you want to skip out on this INCREDIBLE DEAL!". I thought this airline had slightly more class than that but I guess they're just like the rest of them; a used car salesman in a plade suit.
Please redeem yourself United Airlines and take this confirmation message off. To answer your question: yes, I'm sure I don't want to pay $55 for more miles. In fact, I never want to see this option again. Where is that checkbox?

