YOU SAID:

i wish to speak with your sister. it is very urgent buisness.

INTO JAPANESE

私はあなたの妹と話したいです。それは非常に緊急のビジネスです。

BACK INTO ENGLISH

I want to talk to your sister. It's a very urgent business.

INTO JAPANESE

お姉さんとお話ししたいのですが。それは非常に緊急のビジネスです。

BACK INTO ENGLISH

I would like to talk to my sister. It's a very urgent business.

INTO JAPANESE

姉と話をしたいのですが。それは非常に緊急のビジネスです。

BACK INTO ENGLISH

I'd like to talk to my sister. It's a very urgent business.

INTO JAPANESE

姉と話をしたいのですが。それは非常に緊急のビジネスです。

BACK INTO ENGLISH

I'd like to talk to my sister. It's a very urgent business.