commands.flights.find_meetings: use selector helper
commands.flights.find_meetings: use selector helper

snip/skylines,TobiasLohner/SkyLines,RBE-Avionik/skylines,shadowoneau/skylines,snip/skylines,skylines-project/skylines,TobiasLohner/SkyLines,Harry-R/skylines,RBE-Avionik/skylines,shadowoneau/skylines,Harry-R/skylines,Turbo87/skylines,shadowoneau/skylines,skylines-project/skylines,skylines-project/skylines,Turbo87/skylines,kerel-fs/skylines,snip/skylines,TobiasLohner/SkyLines,Harry-R/skylines,shadowoneau/skylines,RBE-Avionik/skylines,skylines-project/skylines,Turbo87/skylines,kerel-fs/skylines,Turbo87/skylines,Harry-R/skylines,kerel-fs/skylines,RBE-Avionik/skylines