I assume by your screenname that you are a mother; well even if not so you might be interested in this information: Back in the 1990's, and even before that, Chrysler models under the name of Plymouth Voyager, Dodge Caravan, and Chrysler Town & Country, weren't equipped with what is called "Brake-Shift-Interlock". This means that you don't have to put your foot on the brake pedal to put it into gear. Which is dangerous. Especially around little kids. Several people were killed cause of this, all cause Chrysler didn't want to install a $10 part. Sad.
Anyways, If one bulb works but the other doesn't, its probably just a bulb. No big deal. If both don't work and you've replaced both bulbs, you've got a wiring problem (go figure its a Chrysler). It could be a bad fuse. I assume that this question being asked 21 days before I answered it, that the problem has been fixed already.
My in laws used to have a dodge caravan around that same year. The brakes would get warn out really fast, and if you didn't get new pads right away, the whole thing (rotor? ) would need to be replaced...given the van is now 13 years old and GM was the company that invented "planned obsolescence" my guess is that you need some major work done to get the brakes working again.
Did you check the bulbs? Thats the most commen problem. If the bulbs are new then its an electrical or wiring problem. You need to have someone look at it if you dont know what your doing, messing wiith wires is a bad idea.