For personal reasons, I have to fly almost once a month. I have tried several different websites for booking tickets. Most of these websites have similar web

structures and the same booking process. There is one thing designed better than many other online store websites that is the step of check out. Customers

don’t need to type in their information twice and they don’t have to register as a member before checking out. The short of the website is that customers

cannot choose depart time and return time separately, which is inconvenient. Another problem during the booking process is the system cannot narrow down

the number of the flight when customers have made a selection of departing and returning time.

By doing HTA, representing the structure for completing the task from customers’ perspective, I can see the shorts of t he design more clearly. It was not that

easy to finish HTA, but it was fun.