how to write official letter

Vibrant Youth Fellowship Christian Pentecostal Mission Int’l Enugu State Hqts Ukwu Uratta Road Owerri Imo State 20/05/2015 Dear sir, INVITATION TO TEACH We the EXCOS of the Vibrant Youth Fellowship, having looked inward, we dimmed it fit to invite you to handle us on seminar/teaching on; Topic: Healthy Relationship. Time: 5:30pm prompt. We pray that God will through you minister to us as you honour our invitation. Thanks in anticipation of a favourable response. Sign, ………………………………….. …………………………………… President Secretary.