A good travel agent first gets to know you and learns about you, your approach to travel, what you like to see and do and how you like to do these things. They can then act as sounding boards, matching up what they know has worked for other travelers like you and helping ensure you get to see and do the things that are best for you and your preferred style of travel.
They can suggest extra places for you to visit that you hadn't thought of, and can help you decide how long to stay at each place. Travel agents scan and also volunteer other information such as how a slight change to your travel dates you might save on hotel or air fare costs, or how you might avoid a peak travel period. A travel agent is there for you to talk to; to answer your questions, and to help you 'get it right' when you plan your travels.
No web application can do this the same way a person does. Travel agents can handle every aspect of your trip from airline tickets to lodging, ground transportation car rental, activities, tours and more.
Planning a trip can be stressful. There are so many options and details to worry about. Travel agents do the work, so that resulting in means less stress for you. Travel agents are in constant communication with the travel community.  So they can give you the most up to date info on airlines, hotels, car rental agencies, travel visas, and other travel services to consider etc�as you plan your trip. There are many reasons to use a travel agent. You can decide!