1 converts written data into sound waves. 2  converts the sound waves from a voice into a digital signal. 3  converts letters from the keyboard into digital format. 4  converts digital sound waves into analog sound waves.
Travel agencies make their money in a variety of ways. The products agents sell have built-in fees that result in a profit for the agency. The amount of the fees and the ways in which they are earned and distributed differ by the type of product sold and the suppliers who provide that product to the agency.
A travel agent may also work at a solo company or for a travel agency. As such, he or she must be capable of working in a professional manner not only with clients, but also with fellow co-workers, assistants, and other staff. The job of a travel agent has no physical demands, but it can be very mentally taxing. A travel agent must be able to put together itineraries, schedules, flight plans, hotel reservations, activity lists, and any other necessary travel information for a variety of locales and for different lengths of time.