Do not use cheapoair.com. I purchased a ticket form them. They sent me an email saying my flight was booked. Then 3 days later I got an email that they didn't book my flight and the price has gone up.
I ended up having to use another agency to get a ticket at a comparable cost and add on 14 hours of layover just to find a flight with a comparable ticket.
I called and they did nothing to accept responsibility for their system not booking my flight when I purchased it.
Save yourself a headache and use another website to book tickets. I ended up using Travelocity. No problems. They told me when it was pending, and told me when it was booked. All set. Would have saved myself 14 hours of layovers if I just used them the first round.