Your English teacher who taught you several years ago has invited you to have a meal at his house but you cannot go. - explain the reason that you cannot go - suggest next arrangement - tell him about yourself and your improvement in English

Dear Sir, Hope that you are in radiant health and best of spirits. I am writing this letter to inform you that I ma unable to come for the meal at your house which you have invited me to attend. In fact, I am very happy to know that you still remember me and am so glad to receive your invitation bur unfortunately on the same day I have to attend the annual meeting of our company which is a crucial meeting of our branch. I a, very sorry for this inconvenience occurred. Next Sunday I am planning to visit my relative’s house which is very close to your home. Is it possible you meet you on that day? If it is not possible, please let me know your possible convenient date because I am very eager to meet after a long period. I am doing well and everything going smoothly. I have immense pleasure to tell you that I am blessed with a baby girl last month. My English fluency has significant improvement because I read English news paper daily as you suggested. Once again thank you so much for your invitation. Looking forward to meeting you soon. Thank you Yours Faithfully Grace