Common expressions and words in English

I think you need to redefine the context of your tread.

Or maybe you are asking for general common expressions?

In my opinion the scope is too broad.

Nonetheless I will share with you some common expressions I usually use when voice chatting:

Later! - Nos vemos mas tarde/adios
Whats up? - Que hay de nuevo?
Roger that! - Entendido/Entiendo
On my way - Ya voy/En camino