Trying write a good summary for my resume.. Help :)?

I'm currently writing my resume and this is my first one. Not real sure on how I should word some things. I have been in the restaurant environment for 9 years. Started as a waitress and was promoted to assistant manager within 6 months. The position I am applying for is a Sales Professional for Clayton Homes. I have my objective written but I'm not sure what i should say for my career summary or what I have to offer this company.. any idea's would be helpful. Thanks!