Please excuse me coming late. 请原谅我来晚了。

It's nothing. 没什么。

It's already six. I must be going now. 已经 6:00 了，我得走了。

It’s already six. I must be going now. 已经6:00 了，我得走了。

Really? Oh, yes. Have a nice weekend! 真的吗？哦，是的。周末愉快哦！