Multi stage order form with express check out.

General information for the website: We are a travel agency offering various flight travel products
Kind of development: Customization of existing website
Num. of web pages/modules: 1
Description of every page/module: I have an existing order form which I would like to be changed into a multi stage form and several new catagories adding. Prices need updating as they are out of date. The new form is to accept an express payment option. Once order is complete we will receive the order by email.
Description of requirements/features: Page is to look minimal, fresh, relavant and exciting, providing a clear understanding of the service which we offer.
Form is to be fully automated so prices can change when a single or return service is required. Prices to change if they are outside of uk. Pricing formula is required.
please see current order form
http://www.checkinpal.com/check-in.php
Extra notes: