I used to use travelocity and heard expedia has many choices for airline ticket. Here I have one question. Since I am a cheap guy like many online shoppers, sometimes I am open to a long period for one travel. In travelocity, there is an option call "My dates are flexible", so I can choose the cheapest travel day in a period. That works pretty well for me and save me lots money. Will somebody here tell me what can I do in expedia?