YOU SAID:

no thank you I am really busy today I don't think I can meet because I need to go make a hamburger

INTO JAPANESE

今日は本当に忙しいですハンバーガーを作る必要があるから会えない

BACK INTO ENGLISH

I am really busy today and I can not meet you because I need to make a hamburger.

INTO JAPANESE

今日は本当に忙しいですし、ハンバーガーを作る必要があるので会えません。

BACK INTO ENGLISH

I am really busy today and I can not meet you because I need to make a hamburger.