I'm a highly mobile freelancer, and I'm looking for someone to help coordinate my travel plans, especially finding affordable flights.
As an example, I need to fly from somewhere in Europe (I'm flexible on airport) to anywhere in China or Hong Kong (again, flexible) within the next 2 weeks. For me to search that on a flight search engine would take ages. That's where you would come in.
Maybe other tasks in future, like finding affordable accommodation, useful local contacts, digitizing expenses, etc.