Bouquet dispatched, we're told (5)
I believe the answer is:
scent
'bouquet' is the definition.
(I've seen this before)
'dispatched we're told' is the wordplay.
'dispatched' becomes 'sent' (I've seen this before).
'we're told' indicates a 'sounds like' (homophone) clue.
'sent' is a homophone of 'SCENT'.
(Other definitions for scent that I've seen before include "Distinctive smell" , "Distinctive odour" , "Number of clues" , "Pleasant odour" , "Trail" .)