Your background may well help you to get a job in the airline industry. My advice would be to approach those airlines that you are interested in and find out what vacancies they have with whatever qualifications you already have. Flight Dispatcher work is usually learnt on the job, and although areas of the world do have a specific dispatcher licence which requires taking a course, notably FAA in USA, there are other places where there is no licence. The EUFALDA website will give you information for Europe and IFALDA for the rest of the world.