A resume should include not only past experience, but also training and special abilities. Just seriously play up your training or special abilities if the experience section is kind of weak. You can put down almost anything under special abilities. Ex. dialects, whistling, singing, jumproping, crying on command, laughing on command, belching on command...
Seriously, say anything; you never know what they might need in a role so if you can do it, put it down. But you might not necessarily want tell then that you can sew or work a light board (if you can) because you might get stuck doing costumes or something. Keep technical theatre stuff to a seperate resume.
oh, and you might not want to indicate that you can do a certain dialect unless you've actually done it in a play before, or had a reliable source tell you that, yes indeed, you can convincingly imitate that dialect.
Also, if they limit you to 16 bars or two minutes for a monologue, keep it to that. You don't want to risk being rude!
Hope i've been helpful!
"This is what I trained to do, and this is what I love about theater. What I love about being an actress is being able to really look into myself and understand another human being. And out my own self, to shape and form and fashion a real human being--and to present that in such a way that people see something of themselves or their own understanding in that human being."
--Phylicia Rashad