[Callers] "booker" fee for tour planning

Hi Just wondering aloud since this is not something I've ever seen discussed here. Do you (or a musician you're traveling with) take a "booker fee" for planning a tour, or even a single community dance when there is a lot of planning with the event host and time spent booking musicians? How much of a fee do you usually ask for from the event host or cut for yourself from the total fee to the group? Donna Hunt