Is the treadmill free, or are you coming back?

How to say “Is the treadmill free, or are you coming back?” in Japanese

In Japanese

そのランニングマシン、空(あ)いてる？それとも戻(もど)ってくる？

Sono ranningu mashin, aiteru? Soretomo modotte kuru?

Is the treadmill free, or are you coming back? in other languages