Answer:
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.
Cloud is my mother, wind is my father. What am I?
I am a little piece of paper, yet sometimes hold lots of value. I am all you need to get into big events, but will cost you. I am an important part of travel. And if lost, you're not coming. What am I?
I move without wings, between silken strings. I leave as you find my substance behind. What am I?
I am the kind of dog that chases anything red. What am I?
I will disappear every time you say my name.