In about 30 minutes.

大约半小时后。

Please tell him that Lu Ming tried to contact him.

请你转告他陆明正设法跟他联系。

Could we make it tomorrow at nine?

明天9点怎么样？

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？

Hello, Air China Flight Reservations. May I help you?

喂，你好，中国航空公司订票处，需要帮忙吗？

No, thanks.

不啦，谢谢。