"For one of the shows filming around here..." Dave supplies, tilting his head at the girl. He hasn't seen anybody else in costumes that look even slightly similar to this, but it's a crazy enough dress that he figures there's no way it isn't some kind of costume.
Her words kind of run together and Dave blinks, stupidly for a moment. "Wait, you fell? Did you hit your head?" HE asks, looking from the manhole to the girl. She's either really confused or on some really crazy drugs. No matter what, though, Dave feels bad for her, so he instantly nods.
"YEah, 'course I'll help." He agrees, gesturing for her to follow him, and wanting to get her out of the way of the crew...considering the weird looks she's already been getting...plus the confusion. "You're in LA. What's your name and where's home?"