why do you think you are the right person for this post

when you going to face a viva then get ready to face a question. why do you think you are the right person for this post. so what will be your answer? Now a days every company want experienced person If you have any related experience then your answer should be Already i am working in a well known Bank and I am able to Work in a diversified environment, where there is an opportunity to show my creativity as an individual as well as a member of a team. My objective is to grow myself as the advancement of the organization. for this reason i think i am okey for this post