What is the problem?

W: Good morning. Is there anything I can do for you?
M: I spilled some juice on my keyboard today, and now the keys are stuck. How soon would you be able to to fix it?
W: WelI, we’re not too busy right now. Why don’t you just wait, and we can probably repair it for you within 30 minutes.
M: Actually, I have to go to the bank and do some shopping in this area. I’ll just come back and pick up the keyboard when I’m done.