“你已经坐上飞机了吗"和“这样我就放心了”用英语怎么说？谢谢

Have you been on broad yet?
That's enough for me!(引自轻松英语会话 联想1000词)

Have you been on board? Then I've put a stone down from my heart.

Have you got the plane?

I am so relieved..

Have you been on broad?
Ok,take care then.(意译)