A：Well, I must be off now. I have an appointment at six.
嗯，我现在得离开了。我六点有个约会。
B：In that case, I won't keep you any longer. Drop in any time.
如果那样的话，我不再挽留你了。欢迎你随时到这里来。
A：Ok. Goodbye.
我会的，再见。
B：See you later.
再见。