use purser in a sentence.
He was forwarded the request by a flight attendant or possibly the purser.
It's perfectly possible that what the pilot hear from the purser was: "Some passengers are getting irate [he got others to speak up in support] because of the movie choice and has been pestering the flight attendants about it and won't give up.
When I flew from Zurich to Vienna with my sister she knew the purser of the flight.
Further, even if we were to agree that it would be unreasonable for the flight attendant or purser to actually forward the request to the captain, I would not agree that it would be unreasonable for a passenger to ask when faced with a purser that claims to not have authority to consider his grievance, as long as said passenger did not then escalate things if told that it was against airline policy.