Begin the letter with an official header that includes the student's full name and address. Learn how to write a professional acceptance letter with our stepbystep guide.Header: Your name, address, date, and recipient's name and address. The purpose of this letter is to invite you and your organization,. , as a public service, to our (name of career fair expo) from ____________a.m. Many VISA issuing offices require that you present a letter of invitation to the conference, proof of conference registration, and airline ticket confirmation. Has anyone's child been selected to apply for University of Texas's Forty Acres scholarship? Write an invitation letter, in English, inviting the individual for a visit. Provide evidence of your valid student status with and a photocopy of your: Simply tell the host that you will not be able to be there.