She is not able to take your call at the moment.

她现在没办法接你的电话。

Oh. I'm sorry.

噢，对不起。

Sure. Oh, sorry, Mary, I'd better go now.

可以。哦，抱歉，Mary，我要挂电话了。

Hello, this is Wang Ming. May I speak to Gao Ling, please?

喂，我是王明，我可以和高玲通话吗？

I need to cancel that. We have had a last minute change of plans.

我要取消预约，我们临时改变计划了。

This is Mr. Wu in Room 415.

我在415房间，姓巫。