Hejka sprawdzi ktoś tego maila xd miał być napisany w języku formalnym. Proszę o wyrozumiałość, ponieważ mój ang jest na niskim poziomie xd
Dear X,
Thank you for your e-mail with inviting me for smile day. I am writing with regard this day and I am sorry to inform you that I can not meet in Monday, because In this day I am going to have a conference and I am not going to have time all day.
I would be most grateful if you could organise smile day on Saturday, however I can go only late Saturday, because I have dentist appointment 9.45 that day.
Should you have any further questions, do not hesitate to contact me. I look forward to hearing from you.
Yours faithfully.
XYZ