c# Elastic Search Custom Ranking assistance required

I have developed an application that indexes worldwide locations in a hierarchal fashion i.e. town > country > state/county > zip which also includes latitude and longitude data. The application indexes the data and i can run searches on the indexed data. Where i require help is customising the ranking so for example exact match queries get higher ranking and other factors. For someone with better knowledge of c# and elastic search it should be a quick job. I will provide the sql dumb of the data and my visual studio project files for the winner of this project. I would like this job to be completed today if possible.