Station Eleven by Emily St. John Mandel

"On Day Four the food from the Mexican restaurant ran out, also the food from the sandwich place in Concourse C. That night they lit their first bonfire on the tarmac, burning newspapers and magazines from the newsstand and wooden bench from Concourse A. Someone had raided the Skymiles Lounge. They got drunk on Skymiles Lounge champagne and ate Skymiles Lounge oranges and snack mix. Someone suggested that a passing plane or helicopter might see the fire and come down to save them, but no lights crossed the cloudless sky."