My job requires extensive travel. I need to keep my schedule with all its
details on my outlook calendar, where my assistant can find and publish.

When I finish buying an online ticket I copy the itinerary. When I try to
paste into the schedule item, I either get a part of the format (not even the
whole table) with a stub for the text, or I get the text and no formating.

I assume I can chose the format of my schedule item contents to be RTF, HTML
or plain text. But where do I make that choice.

However what is really happening here. I need to understand it.

Why don't airlines websites just ask my permission and make the outlook
calendar item entry automatically for me? (not a real question)

Thanks