YOU SAID:

would you like to bring me a coffee

INTO JAPANESE

私にコーヒーを持参したいです。

BACK INTO ENGLISH

I want to bring the coffee.

INTO JAPANESE

私はコーヒーを持って帰りたいです。

BACK INTO ENGLISH

I have coffee, you want to go.

INTO JAPANESE

私はコーヒーを持って、行きたいです。

BACK INTO ENGLISH

I have coffee, you want to go.