Good night

Good night~ Dear friends all over the world, I will go for sleep. Wish myself a great dream.

Hello, Vikky. 'Goodnight' is usually joined as one word when you are sending your best wishes to someone. If someone is going out for a meal or to a function in the evening you could say 'have a giid night'  two separate words. We say 'go to sleep' and for dreaming we tend to use the phrase 'sweet dreams'. You could say 'I am wishing .....' but it is not absolutely necessary. Anyway, I hope you had a great dream.  

Goodnight

Goodnight, Dear friends from all over the world, I will now go to (for) sleep. Wishing (Wish) myself sweet dreams (a great dream).