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

她现在没办法接你的电话。

That's all right.

没关系。

We have another event to attend on the same day.

那天我们有其他活动要参加。

Fine. Good-bye.

好的，再见。

Yes. Have you got any seats left on the 10th at 7:30 a.m. to HongKong?

是的。你们还有10号早上7点半去香港的机票吗？

Why not?

为什么不能？