When I teach classes in working with the angels, I'll often have people ask me if it's okay to ask the angels for the little things, like getting a good parking spot, or freeing up a really busy schedule.
The answer is absolutely YES! The angels can help with anything. Even the archangels are happy to help, all you have to do is ask.
I know one limiting belief around the angels is that if someone asks for help with a little thing, that it takes the angels away from more serious situations. But this is simply not true.
Angels are unlimited in their divine expression, and can be in an infinite number of places at once. Thousands of people will ask Archangel Michael for protection, and he is there for each and everyone one of them.
So ask