Passengers enrolled in an airlines frequent flyer program can qualify

Passengers enrolled in an airline’s frequent flyer program can qualify for free reward flights by earning a certain number of miles over a two year period. Any miles earned that have not been redeemed two years after they were earned expire (no longer qualify for reward flight consideration). Passengers earn one mile for each mile traveled on a flight with the airline, for all paid flights (reward flights do not earn miles). The number of miles that must be earned for the various reward flights is as follows:

Free reward flight between	Number of miles
Any two cities in the U.S. or Canada	25,000
Between the U.S. or Canada and Central America	30,000
Between the U.S. or Canada and Europe or South America	40,000
Between the U.S. or Canada and Asia	50,000

The table contains a complete list of the trips that 5 people took with the airline between 2008 and 2011. Unless otherwise noted, these were paid flights, not reward flights. Select a flyer who, on the date of her last trip, had earned enough miles to qualify for a reward flight between any two cities in the United States or Canada, but not enough for any other reward flight, and select a flyer who, on the date of his last trip, had earned enough miles to qualify for a reward flight between the United States and Europe, but not enough for a reward flight between the United States and Asia.

Within the U.S. or Canada	U.S. and Europe
		4070 miles on Jan. 7, 2008, and 4070 miles on Jan. 19, 2008; 2510 miles on Aug. 13, 2008, and 2510 miles on Aug.19, 2008; 5380 miles on Sep. 13, 2009, and 5380 miles on Sep. 23, 2009
		9940 miles on Feb. 23, 2009, and 9940 miles on Mar 14, 2009; 5610 miles on Aug. 17, 2009, and 5610 miles on Sep. 1, 2009; 6750 miles on June 10, 2010, and 6750 miles on July 7, 2010
		7350 miles on Oct. 6, 2008, and 7350 miles on Oct. 21, 2008; 5330 miles on May 23, 2009, and 5330 miles on Aug. 16, 2009; 7350 miles on Sep. 13, 2010, and 7350 miles on Dec. 9, 2010
		10,200 miles on a reward flight on Mar. 23, 2008; 10,200 miles on Apr. 7, 2008; 10,200 miles on Sep. 17, 2008, and 10,200 miles on Oct, 12, 2008
		6790 miles on Mar. 9, 2010, and 6790 miles on Mar. 21, 2010; 6790 miles on Oct. 14, 2010, and 6790 miles on Oct. 27, 2010