我不想再说了用英文怎么说

口语一点的,I don't want talk this anymore./ I got nothing to say.
强硬一点的,I have finished this conversation.

I don't want to say again.

I don't want to say more

i don`t want to say again

ok I am done for that 好了，我不想说了
I have had enough 我受够了

I don't want to say again.