In about 30 minutes.

大约半小时后。

Please give him the message.

请转告他。

Is the boss coming by?

是老板过来了吗？

Great.

太好了。

I'm calling to know if it would be at all possible to cancel our reservation.

我打电话想知道我们的预约是否有可能取消。

Bye.

再见。