Independent Business Travel Booking Advice
 

I have always worked for companies that had online booking tools with 24-hour agents available for emergencies, etc. I just took a job where we make our travel arrangements independently. I guess I was spoiled having one-stop shopping with all of my frequent traveler numbers and credit cards in the system. Does anyone book travel through a one-stop travel site that allows you to enter preferred airlines and frequent traveler numbers? Or does anyone have tools that they find particularly helpful (apps, websites, tips, etc)?