This is the 15125th most frequent German word.
stornierte
"Stornierte" means "canceled" in English.
Here, 'stornierte' is used as the simple past of the verb 'stornieren', indicating a completed action.
Er stornierte gestern seine Hotelreservierung.
He canceled his hotel reservation yesterday.
'Stornierte' represents the simple past form used in a narrative context, describing the cancellation action being done by the tourists.
Die Touristen stornierte ihre Flüge rechtzeitig vor der Reise.
The tourists canceled their flights in time before the trip.
In this usage, 'stornierte' functions as an attributive adjective, describing 'Buchungen' (bookings) and giving more information about their state.