Usually when someone says they have a "low" or "very low" budget what they're really saying is they have NO budget and the guys who have been in the trenches trying to make a living with video aren't going to be interested in taking on such a job. However, occasionally the project might be of such compelling interest that someone will do it pro bono based on certain conditions before, during or after the fact.
People like you can get lucky but keep in mind that the project must be compelling and must have some serious values over simply being a personal pursuit for your own gratification.
That being said, two people interacting on a small setting/stage, on location (this is your major area of expense as you will need to provide travel, lodging and food, transportation, and if it goes beyond indoor with controlled lighting and sound even MORE) COULD simply be a three-to-four hour gig at about $200 per hour if the producer is providing everything it takes to make it happen ... other than the "talent" and props and what I've already mentioned of course.
Then again it could be even less, but I doubt anyone with equipment necessary, talent and experience, who considers him/herself to be a knowledgeable professional is going to go for anything less, and probably NOT that amount.
There's a decided difference in someone who can "put it together" with basic equipment and knowledge and a true professional who has all the equipment, or can acquire it or give you a list and let you rent, buy or lease it for the shoot, then knows how to direct, what to shoot for, what to take to the editing bay and how to put it all together, plus likely you want to "sit in" on the editing and production process which is going to further increase the number of hours it is likely to take to make it all happen.
So, instead of saying you have a low/no budget project, give people in the business an idea of your needs, expectations (you don't HAVE to give away your idea or whatever it is) and what you plan to do with this "project" after it is completed. You need to also SAY how much you have to spend. Instead of worrying that you might come against someone who will USE IT ALL, if you have ANY budget at all and put it out there, a REAL professional will give you a serious idea of how far off the mark you are. OR, will actually do it, do it right, on time and under budget.
Some of us pride ourselves in being able to finish early and come in under budget, but we don't get a lot of joy from doing something for nothing and ALL of us have experienced "carrots" and "kisses and promises" so we're a bit put off by the usual approaches that smack of "do this one and there'll be even more and better gigs down the road."
This is my observations, advice and suggestions for getting somebody to consider your project.