Library Dragon,
You mentioned that you are flying to ABQ, so it appears that you have happened upon Great Plains Air. As correctly pointed out by
Eugene, Great Plains found it easier to buy the operating certificate of Ozark Airlines, rather than start from scratch.
Great Plains operates 3-4 Fairchild Dornier jet aircraft daily on the following route:
BNA-TUL-OKC-ABQ and vv.
Flights seem to be proving extremely popular, so you should book in advance. Service is in a 2-2 all economy configuration. If you want more info, you can check out their website at:
http://www.greatplainsairlines.com
(website has been down intermittently so try again later if the URL doesn't work).
Also, you can call them at:
1-866-929-8646