Mr. and Mrs. Eddie Keyser of Soddy-Daisy announce the engagement of their daughter, April Michelle Keyser, to Ryan Paterson Davis, son of Steve and Darlene Davis of Huntsville, Ala. The wedding is planned for Saturday, April 25, in Chattanooga. Ms. Keyser is a graduated of Vanderbilt University. She is employed as a nurse practitioner in Wartrace, Tenn. Mr. Davis is a graduate of the University of Alabama. He is employed as a pharmaceutical sales representative with Lilly, USA.