Before seminar, association should supply air-travel preference? (4,5)
I believe the answer is:
club class
'should supply air-travel preference?' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.
'before seminar association' is the wordplay.
'before' says to put letters next to each other.
'seminar' becomes 'class' (I've seen this before).
'association' becomes 'club' (club is a kind of association).
'class' after 'club' is 'CLUB CLASS'.
Can you help me to learn more?
(Another definition for club class that I've seen is " more comfortable part of cabin".)