How do I get an inactive twitter handle?

[Karen]

I would love to obtain the twitter handle @Munchkin or even moreso @Bri since that's my name. The twitter handle @Bri has 0 tweets, and their avatar is the standard egg, and has never been active I'm guessing. The handle @Munchin hasn't been active in over 6 months, and my current twitter handle is @Briianagrace. So i was wondering if it was possible in any way to contact twitter about possibly gaining access or getting the usernames to these two handles? Thanks for the help!