To begin with, you need a plot. This can be as simple as "Two men meet, speak about business, and depart." It won't be an amazing story, but it will be a story.
Try to invest your story with some sort of conflict. Your two businessmen might be rivals, trying to buy the same property.
Give them distinctive voices. One might be more professional than the other, one might speak with an accent.
At the very least, make sure you have a beginning, middle, and end. It doesn't have to be exciting or memorable as long as something happens. Anything at all.
See this link for more information about story structure.