user: Question: Who is the away team for the tome team Leeds United, at the League Cup Competition?
Columns: ['Date', 'Home team', 'Score', 'Away team', 'Venue', 'Competition']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['18 October 2003', 'Leeds United', '0–1', 'Manchester United', 'Elland Road', 'Premier League']
SQL:

assistant: SELECT "Away team" FROM "Table" WHERE "Home team" = 'Leeds United' AND "Competition" = 'League Cup';