It is better to buy online from the airline itself. You can visit their websites and compare the rates! It's very easy, cheapest & simplest way, since you can do it from your room. You will find some options to choose.

The website address?
Thanks God we have Google...:-)) Ask her.

You need to have a credit card to pay. You don't have? ask your friend who has...:-)) pay him later.

There is always simple way to get things done.