How To Write A Letter Declining Invitation For Dinner . When declining an invitation, it’s important to do it with grace and respect, this means thanking the convener for organizing the meeting or event. Be clear about your yes. 5 Declining formal Invitation Letter SampleTemplatess SampleTemplatess from www.sampletemplatess.com Unfortunately, i’ve got my priorities set for the year and this just doesn’t fit in. Dearest geeta, thank you for your loving letter inviting me to attend your birthday party on saturday next in the evening. Instead, it’s a nice phrase that means your spirit will be there at the party, even if you physically cannot be.