Mendelsohn said the automated systems often have "build menus" and when customers start deviating from them the process can get time-consuming. Sometimes, customers may not get what they want.
"Of course, with a human there's a very good chance you're not going to end up with what you ordered, either," she said.
OTG is using iPads and self-service technology at its airport eateries to speed up service and keep travelers happy.
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