user: Question: Which Mission is on 2003 Apr 1?
Columns: ['Mission', 'Date', 'Launch site', 'Motor', 'Apogee']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Maxus 1', '1991 May 8', 'Esrange', 'Castor 4B', '154 km']
SQL:

assistant: SELECT "Mission" FROM "Table" WHERE "Date" = '2003 Apr 1';