Public Speaking Course:
You must ask the person who hired you to speak and find out exactly what they want you to accomplish during your presentation. This is a very important part of the "proper prior preparation" you will learn of in your public speaking course.
It is best to have the specific points spelled out in writing, that way there is no room for error in what was wanted. This can be handled with a question on your pre-program questionnaire.
If you don't get this information, you are open to them complaining that you didn't achieve the goals the meeting organizers had set. And as you will know from your public speaking course, if you lose your "connection" with the meeting planners, you lose, period, because you will lose your access to the audience for whom you work to connect, inform, entertain, educate, and inspire.
P.S. Just because this is a short article doesn't mean you should ignore it's BIG message. Ignore this point and it can mean BIG trouble for your career.