user: Question: What time was the kickoff when the Miami Dolphins were the opponent?
Columns: ['Week', 'Date', 'Kickoff ( ET )', 'Opponent', 'Result', 'Record', 'Game Site', 'NFL.com Recap']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Sunday September 7', '1:00 PM', 'Seattle Seahawks', 'W 34–10', '1–0', 'Ralph Wilson Stadium', 'Recap']
SQL:

assistant: SELECT "Kickoff ( ET )" FROM "Table" WHERE "Opponent" = 'Miami Dolphins';