Does anyone have experience in or know what?

Does anyone have experience in dispatching or know what dispatchers do? I have an interview on Monday morning for a dispatcher position with a furniture company. The guy was kind of short with me on the phone and he said, ';Do you even know anything about dispatching?'; I know OF many people without experience or any education that get hired for dispatching jobs, so I know that it can't be that hard. I also have the skills, education and administrative experience, capability of learning, and fact that I am a fast learner, so I know it is something that I could catch on to easily. It would be nice to take some knowledge about 'dispatching' with me to the interview. That way I can show him that I am familiar with what they do and capable.