Hello
I'm fairly new to InfoPath but really want to learn some useful techniques. I'm currently designing a room booking form for a conference venue, that I need to work with filters. For example, the user can choose a number of room options:
Conference Suite
Syndicate Suite
Conference 1
Conference 2
Syndicate 1
Syndicate 2
Exhibition Area
If the user chooses, conference suite as an option, then the next room they want can't be either Conference 1 or Conference 2 (as these make up the conference suite), the same with the Syndicate options.
I've tired a few different ways, even linking to a list in SharePoint, but I'm obviously doing things wrong as I can't seem to get all the options to appears

I would very much appreciate some advice.
Thanks