When playing custom made char it feels so boring not having dialogues, arguments, conflicts(not real ones ;) ).
So what im asking is there any way to get NPC voice, dialogues and everything into self-made char.

Here at SP you can find all the NPC's voiceset, but I am not sure about dialogues etc.

No I think there isn't any way to do that. However there are utilities and guides on how to create your own NPC but that would take years for someone like you to do it ;) :p .

Perhaps you might find someone that would do that for you though I've no idea where to find such person. Ask around.

I could make an NPC for you and put him/her into the game along with the sound files you want. I'll give you a link to a dialog editors. I'm working on writing dialog for my own NPC right now, so I don't have time to do more, but you can write it yourself easily.