I just noticed the FA announcement with the title
"Flight Service Coordinator" being used for the first time this week. This
makes sense to me. For years, when FA's announced,
"I will be your purser on today's flight", I often wondered what
that really meant. I figured it was rooted in some irrelevant
history, and indeed, according to
http://www.etymonline.com/index.php?term=purser
it is a 15th century designation and has nothing to do with
what flight attendants do.