decline invitation

[NAME]

[TITLE]

[ADDRESS]

Dear Mr. Man, 

Thank you for your telephone invitation about the Houghton Grand Ball on March 8. I apologize for taking so long to respond; I’ve been trying to work out my schedule. But unfortunately, as it’s turning out, there is simply no way I can be in Washington at that time. 

I hope you’ll give me another opportunity to join you in the coming year. 

Best personal regards, 

[Signature]

[NAME]

[TITLE]