[speaker001:] Can I help you?
[speaker002:] I need some stamps.
[speaker001:] What kind of stamps do you want?
[speaker002:] How much do I need for this letter?
[speaker001:] I must weigh it.
[speaker002:] How much? Is it overweight?
[speaker001:] It is 5 grams overweight. Do you want to send it as an ordinary or registered letter?
[speaker002:] How much is it, then?
[speaker001:] Registration plus overweight, 7 yuan in all.
[speaker002:] OK. Here you are.