Palace attendant has no time for tour guide (7)
I believe the answer is:
courier
'for tour guide' is the definition.
(thesaurus)
'palace attendant has no time' is the wordplay.
'palace attendant' becomes 'courtier' (I've seen this in another clue).
'has no' suggests deleting specific letters.
'time' becomes 't' (abbreviation).
'courtier' with 't' removed is 'COURIER'.
(Other definitions for courier that I've seen before include "Messenger carrying papers etc, perhaps on motorbike" , "Person delivering a parcel, say, by motorcycle" , "Travel guide" , "Diplomatic messenger" , "Type" .)