Newbie - A Late Knock

http://chinesepod.com/lessons/a-late-knock

A : 有人吗？
B : 噢，你来了！
A : 对不起，我迟到了。
B : 没关系！请进。

A : Is anyone there?
B : Oh, you are here.
A : Sorry, I'm late.
B : That's OK. Come in.