Answer:
I can fly but I have no wings. I can cry but I have no eyes. Wherever I go darkness follows me.
I start in little but I end in full you'll find me in half and complete.
By Moon or by Sun I shall be found. Yet I am undone if there's no light around.
I begin and have no end. Eventually, I will be the ending of all that has begun. What am I?
I am a million people's wakeup call, gossip party and adrenaline rush. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.