@startuml
left to right direction

:Inhaber: as owner #ffaaaa;line:red
:Mitarbeiter: as employee #aaffaa;line:green
:Kunde: as customer #aaaaff;line:blue

(Programmübersicht anschauen) as overview
(Sitzplatz reservieren) as reserve
(Sitzplatz buchen) as book
(Sitzplatzreservierung stornieren) as cancel
(Sitzplatzreservierung\nin Buchung umwandeln) as convert
(Kinostatistik anzeigen) as stats_cinema #ffaaaa
'(Filmstatistik anzeigen) as stats_movie #ffaaaa

(Ticketstatus prüfen) as check #aaffaa;line.dotted

customer --> overview
customer --> reserve
customer --> book
customer --> cancel
customer --> convert

'employee --> overview
'employee --> reserve
'employee --> book
'employee --> cancel
'employee --> convert
employee --|> customer

employee --> check

owner --> stats_cinema
'owner --> stats_movie

@enduml