agency and ask them if there are any flights available to Iowa. They say there is no flight available at the moment, but you whine that it's very urgent. They search their computer for you and tell you that they could get you into United Airlines flight to Iowa, in the cargo, or via a FedEx aircraft, but it will cost you extra.
 

DO YOU:

agree to their offer

or

drive to the airport to check flights yourself, the agency might be wrong