Dine out with chap, duke, as desired (2,6)
I believe the answer is:
in demand
'desired' is the definition.
(synonyms)
'dine out with chap duke' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'with' means one lot of letters go next to another.
'chap' becomes 'man' (chap can mean a man).
'duke' becomes 'd' (abbreviation).
'dine' anagrammed gives 'inde'.
'inde'+'man'+'d'='IN DEMAND'
'as' acts as a link.
(Other definitions for in demand that I've seen before include "Sought after, desired" , "amazingly popular" , "Wanted" .)