Help. Got a 3 min presentation on thursday

Help got a 3 min presentation to do on Thursday. On why I am intersted in a career in b2b sales and why I think I am suitable. I don't have a clue on how to start it or what to put in it. Only allowed to use a flip chart. The presentation is designed to show our assessors what you be like in a sales position. It is an opportunity for you to tell us who you are, why you are different and to really sell yourself. The duation of the presentation is 3 mins long. At the moment I am a retail manager and desperatly want to change my job. Please HELP. Any ideas will be greatly appreciated.