YOU SAID:

hi cosmo, did you bring my package?

INTO JAPANESE

こんにちはコスモ、私の荷物を持ってきてくれましたか?

BACK INTO ENGLISH

Hi Cosmo, could you bring my luggage?

INTO JAPANESE

こんにちはコスモ、荷物を持ってきてもらえますか？

BACK INTO ENGLISH

Hi Cosmo, can you bring my luggage?

INTO JAPANESE

やあ、コスモ、荷物を持ってきてくれる？

BACK INTO ENGLISH

Hi Cosmo, can you bring my luggage?