user: Question: what is the date of appointment for the team Osasuna?
Columns: ['Team', 'Outgoing manager', 'Manner of departure', 'Date of vacancy', 'Replaced by', 'Date of appointment', 'Position in table']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Mallorca', 'Gregorio Manzano', 'End of contract', '19 May 2010', 'Michael Laudrup', '2 July 2010', '5th ( 2009–10 )']
SQL:

assistant: SELECT "Date of appointment" FROM "Table" WHERE "Team" = 'Osasuna';