creating file lay out in ssis

how to create a file with header record? and detail record from table rows?

file lay out should be like this

H123456YYYYMMDD

D12345PETER20120521

D12345JOHN20130522

D12345ADAM20130523

hOW CAN I CREATE HEADER RECORD AND DETAIL RECORD LIKE ABOVE ( HEADER SHOULD BE SAME ALL THE TIME WITH DIFFERENT DATE DEPENDS ON RUNDATE)?

ANY SAMPLE CODES PLEASE

THANKS GUYS