We'll detail everything you need to know about how to invite a guest speaker, from the earliest planning stages to drafting a formal speaker invitation letter. Speaker Request Form.Event Title, Purpose of Event, Event Organizer, Event Contact Person Name, Event Contact Person Title, Event Contact Person Email. On behalf of the XYZ and the XYZ Organizing Committee, we are honored to invite you to speak at the XYZ event celebrating Cybersecurity Career Week (CCW). Appendix C2: Cuyahoga County EDI Invitation Letter. How to fill out the Formal Invitation Letter to Guest Speaker Dr. Emily Thompson? Your invitation should be a formal email (or letter). Outline the reasons why you've chosen them as the best person to speak at your event. Major William Adams, a twenty year veteran of the United States Army. â–¡.