Beagle
I would employ the one with the best figure but who is just bright enough to do the job,.
That's what Richard Branson does, with only the occassional lapse, and he wouldn't get a job working for anybody else if he tried.
And if there are multiple candidates even then I would pick the one who is older so more mature and less likely to get pregnant.
Nowadays, airline travel is deadly tedious and frustrating, with so many people on the verge of giving up altogether if only they had the option. Anything to differentiate one's service!