Complete the online Speech request form at least six weeks in advance of your event. Please provide as much detail as you can on your topic of interest.Below is a sample invitation to an event that you can send to a legislator or candidate. We would be honored to have you as a speaker and would be grateful for the opportunity to share highlights of our research program with you. It is my sincere pleasure to invite you to speak at NRC's 23rd annual United States Nuclear Regulatory. Information Conference (RIC). 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. We would like to invite the Governor to an event, we would like to meet at the Governor's Office, we would like to invite the Governor to a virtual event. What are the basic components of an Invitation Letter for a Guest speaker? Sample Meeting Request Letter.