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.
Travel agents held about 73,300 jobs in 2012. Travel agents work in offices, where they spend much of their time on the phone and on the computer. In some cases, busy offices or call centers may be noisy and crowded. Agents may face stress during travel emergencies or unanticipated schedule changes.