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

### Instruction:
What attendance has astros as the opponent, and april 29 as the date?

### Inputs:
table_name: table, columns: ['Date', 'Opponent', 'Score', 'Loss', 'Attendance', 'Record']

### Response:
SELECT SUM Attendance FROM table WHERE Opponent = astros AND Date = april 29