Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What time was the kickoff when the miami dolphins were the opponent?

### Inputs:
table_name: table, columns: ['Week', 'Date', 'Kickoff ( ET )', 'Opponent', 'Result', 'Record', 'Game Site', 'NFL.com Recap']

### Response:
SELECT Kickoff ( ET ) FROM table WHERE Opponent = miami dolphins