Question: An example of a hidden asset is a frequent flier program that was chosen for a combined airline in what year?
Sentence (from "SkyMiles"): SkyMiles is the frequent-flyer program of Delta Air Lines that offers points (or "miles") to passengers traveling on most fare types, as well as to consumers who utilize Delta co-branded credit cards, which accumulate towards free awards such as airline tickets, business and first class upgrades, and luxury products.
Relevant evidence: No