Dearsirmadam:
On[date]，wewillhostaneveningofcelebrationinhonoroftheretirementof[name]，Presidentof[pany]。Youarecordiallyinvitedtoattendthecelebrationat[hotel]，[location]，on[date]fromtop。m。
[name]hasbeenthePresidentof[pany]since[year]。Duringthisperiod，[pany]expandeditsbusinessfromto。Nowit'souropportunitytothankhimforhisyearsofexemplaryleadershipandwishhimwellforahappyretirement。PleasejoinustosayGood-byeto[name]。
Seeyouon[date]。
Yourssincerely
[name]
[title]