When one purchase is a flight ticket via an online travel agent, the online travel agent may take some time to process the booking and send the actual ticket to the customer. Is there any limit on how long that booking can be?
Assume that the customer can't cancel the booking, if that matters. I'd guess there must be limit to protect customers for excessively long processing time. I'm mostly interested in the United States, and I'm curious about other areas as well (online travel agents tend to be located anywhere).