When is a good time to catch him?

什么时候可以找到他？

Can I leave him a voice in mail?

我可以在他的语音信箱里留话吗？

I'm afraid I'll be tied up tomorrow at ten.

恐怕明天上午10点我很忙。

OK. What time is it?

好啊。什么时候？

Hello, my name is Li Ming and we have a reservation for party tonight.

喂，您好。我叫李明，我们在你们这预定了今晚聚会。

I doubt it, sir. We'll try, but I can't promise anybody before 3:30.

我没把握，先生。我们会尽早的，但我不敢许诺3：30以前行。