@June10
As a host, I have my own personal gut feeling reactions to somebody with an inquiry/request. These impressions are subjective and subliminal, and I could under no circumstances fairly communicate my reason to that person. Sometimes I might even be hoping and waiting on a pre-approved inquiry for another booking overlapping same days to come through.
There's nothing you can do, really. That's the thing with Airbnb - you are directly dealing with people, their property and personal decisions. Hotels will take anyone, but also have more rooms and also more recourse to take in case a guest is inappropriately out of line.
Even the Airbnb helpdesk wouldn't be able to assist you on this. Best accept it and move on.