I need to talk to Mr. James immediately. 我得马上和詹姆斯先生谈谈。

　　Can I talk to you for a second? 我能和你谈一会吗?

　　She is talking to someone else right now. 她现和别人说话呢。

　　Is it okay if I phone after lunch? 我吃完午饭打电话行吗?

　　No problem. I'll talk to you then. 没问题，到时候聊。