[speaker001:] Can I help you?
[speaker002:] I need some stamps for this letter.
[speaker001:] What kind of stamps do you want?
[speaker002:] How much do I need for this letter?
[speaker001:] I must weigh it first. Err... It's five grams over weigh, Do you want to send it as an ordinary or registered letter?
[speaker002:] I want it registered. How much is it then?
[speaker001:] Registration plus overnight... err... seven dollars in all.
[speaker002:] Here's a 10 dollar bill.
[speaker001:] Now, your receipt, and the change.
[speaker002:] Thanks. Good-bye.