Cathy:
Hello, how may I help you?
Alex:
I'd like to send this package to California.
Would you like to send it overnight or by regular mail?
How much is it to send it overnight?
20 dollars
And by regular mail?
12 dollars.
I'd like it to get there tomorrow.
Please fill out this form. When you're finished, come back to this window.
OK, I think I'm done, is this correct?
Yes, that's right.
I'd also like to mail this letter.
Do you need to buy stamps?
Yes.
A book of stamps costs 3 dollars. So that'll be 23 dollars for everything.
Oh, I forgot my wallet in the car. I'll be right back.