Using your website, I was able to find exactly the flight I wanted: a return trip from London Gatwick to Austin, Texas in March 2005. However, I was unable to use the ebookers website to book the flight.
2) Make my booking via telephone (without the benefit of SSL).
3) Go to a different website.
I’m afraid option number three looks the simplest solution right now. Sorry :-(
Might I make the suggestion that any show-stopping form validation on your site be done on the server, rather than the client?