Proszę o pomoc w sprawdzeniu .

Dear Mike,
Thanks very much for your note.
Thoughtful on your part that you invite me, but I am afraid of but I can not come. Since I am leaving with her parents this weekend.It is Anyway, I hope you have a great party !
See you soon.

Thoughtful on your part for having invited me to join your party but since I'm leaving ... a jak to mialo wygladac po polsku

Thoughtful on your part that you invite me, but I am afraid 'of but' THAT I
can not come.