user: Question: When was Hon Les Johnson in office?
Columns: ['Member', 'Party', 'Electorate', 'State', 'Term in office']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Hon Evan Adermann', 'National', 'Fisher', 'Qld', '1972–1990']
SQL:

assistant: SELECT "Term in office" FROM "Table" WHERE "Member" = 'Hon Les Johnson';