It is said that the Angels already know the higher plan for our lives. They sense our hopes and dreams, but cannot interfere with our human choices. This would be interfering with the laws of karma. We are given circumstances where choices can be made, but as humans we often make this difficult for ourselves.
When petitioning the angels remember that intention and interpretation are important. Angels are not like a ‘genie of the lamp’; they don’t fulfil your every desire. But wherever possible, and if your wish is for the highest possible good of all concerned, it is likely that you will have a favourable outcome.