On October 29 I will be flying from Dammam (Saudi Arabia) to Brussels via Frankfurt (that is, if this damned flu will be healed by then

Although the tickets were booked on Lufthansa, I just noticed on my e-ticket that this flight will be operated bij PRIVATAIR.... a company of which, I have to admit, I have never heard of....

Anyone out there who can shed any light on this company and more important its service, the age of its airplanes (I will be flying with their Boeing 737-800), its safety record, .......
Thanks in advance,
Erna