YOU SAID:
I want to have dinner with my mom and dad on June 20th
INTO JAPANESE
6月20日にお父さんとお母さんと一緒に夕食を食べたいです
BACK INTO ENGLISH
I would like to have dinner with my father and mother on June 20th.
INTO JAPANESE
6月20日に父と母と一緒に夕食をとりたいと思っています。
BACK INTO ENGLISH
I would like to have dinner with my father and mother on June 20th.
Come on, you can do better than that.