Just state your name, your company and how you can help the prospect. Once you've done that, there's a sense of relief from both sides. The prospect is relieved because he now knows why you've called and you're relieved because the prospect hasn't hung up on you. Now you can go about the task of establishing some rapport and setting the appointment. Be happy and humorous .
People love to laugh.
A quick, clean story or joke can do more for buyer rapport than 10 minutes worth of sales talk. Get to know something personal about the prospect . You can gain insight by questioning, then listening. Prospect mood, hometown and personality will all be revealed in just a few minutes. I listen closely for speech accent.