My travel agent can make my receipt conform to whatever reasonable format is required. A receipt for the total cost for one ticket (ie total, not that final transaction); a receipt that shows the total along with how much was charged to a card and how much was paid with a [voucher, exchange, etc]. A receipt that shows only the business portion of a trip...

If you fly a lot, a good, dedicated, knowledgeable agent is worth every penny.

IMO