Q:

Does 'flight attendant' refer to men, woman or both?

In English there are some words which just refer to men, like Sir, or just refer to women, like Madam.
Does flight attendant refer to women, men or both?

A:

It refers to both. Steward and stewardess are gendered and were historically more commonly used, especially in the period when the job was much more strongly associated with one sex or the other (at first a strictly male-only job, then later a strongly female-dominated job, before returning some way toward being more balanced). These days flight attendant, cabin attendant and cabin crew are preferred precisely because they aren't gendered terms.

