Redirect to dynamic page

I’m not attempting to create a property page for a property that does not exists. The dynamic page is a city page that display properties. Some cities may not have properties at this time but I still want to have a link on the homepage to that city page. However before the wix system attempts to create the dynamic city page I would like to check to see if there are properties in that city and if not redirect to a dynamic page that will just display “No properties found in Dallas” and then the visitor will have the opportunity to add a property from there. I hope that makes sense. This also does not have anything to do with a error404 page.