Sound likable and someone who plays well with others even in rough circumstances and have a couple of anecdotal experiences to back up what you are saying.
Use the buzz words of the posted job req and how you personal fit in with them.
Remember HR knows HR and HR things, not the things you will be hired to do. They do however have a tic and tie list of things that the hiring manager wants in the person who will fill the position.
So be likable and use this screening as a warm up for how you will answer how you best fit the job req requirements andf what you will bring to the party.
Hiring is one of the worst parts of the job. So make yourself the winner.