How to remove 'listings-category' from the URL

Is there a way to remove 'listings-category' from the URL so the url is

I have this ...
http://thetraveljoint.com/listing_category/dining/restaurants/

But, I want this ...
http://thetraveljoint.com/dining/restaurants/

Then, when I click on the detail page, I would like to remove 'listing' from the URL.

Currently, I have this...
http://thetraveljoint.com/listing/indochine/

But, prefer this ...
http://thetraveljoint.com/indochine.html

Or, at least be able to change it to ...
http://thetraveljoint.com/restaurants/indochine.html