booking econ and bus on same ticket--where?
 

Hi, I would like to book an econ segment and business class segments on the same ticket. Web sites like Orbitz only seem to allow you to book one class of service (sometimes two, but then only if econ is the ONLY option on a particular segment). Is there any site I can book one segment on econ, another in business? (Particularly on US and UA). Worst case scenario, I buy two tickets, but I want one so that if anything happens with the earlier segments, I am protected on the later segments.

Thanks.