write an informal invitation to invite your friends on behalf of Mr and Mrs A.K Gupta invite Mr and Mrs P. K sharma formally on your Son's marriage. write a formal and informal reply for above.?

Mr.and Mrs.Ak Gupta

I hope that you are fine. As you all know that my son's marriage is approaching this weekend. I am writing this letter to inform you that I am arranging a party at my home. The marriage is planned (7.11.2020) in the evening (4:00 to 12:00). It will be a great pleasure for me if you join me on marriage party.
Your kind participation in the celebrations is welcome. Hope you will join us at the celebrations and make us thankful. Schedule of the party along with address is attached to the letter.

Mr.and Mrs.Pk. Sharma
Mayur vihar (Delhi)
1122334455.