Answer:
Lovely and round, I shine with pale light, Grown in the darkness, a ladyβs delight.
It makes me warm and secure.
It can be clear like water, but it burns like fire.
If you are unsure how to use one then just ask a flight attendant.
What can speak without a tongue and listen without ears?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.