YOU SAID:

Hello can I talk to your manager

INTO JAPANESE

こんにちは、私はあなたの上司と話をすることができます

BACK INTO ENGLISH

Hello, I will be able to talk with your boss

INTO JAPANESE

こんにちは、私はあなたの上司と話せるようになります

BACK INTO ENGLISH

Hello, I will be able to speak with your boss

INTO JAPANESE

こんにちは、私はあなたの上司と話すことができるでしょう

BACK INTO ENGLISH

Hello, I will be able to speak with your boss