Imagine boarding a plane at the height of luxury air travel — men in suits and ties socializing with women in skirts and pillbox hats, sipping cocktails and reading magazines while sitting in mid-century swivel chairs upholstered in loud patterns. The glitz and glamour of the 1960s and early ‘70s marked the “golden age” of private air — a thing of the past that will soon be brought back to life in Phoenix’s upcoming cocktail experience, Carry On…