You need to re-read the story. A bit more slowly.
Some of their more memorable slogans:
1974 – Delta Is My Airline
1980 – Airlines Are the Same. Only People Make the Difference.
1984 – Delta Is Ready When You Are
1984 – Delta Gets You There (also: Delta Will Get You There, Delta Gets You There with Care)
1987 – We Love to Fly and It Shows
1992 – Ready When You Are
1994 – You’ll Love the Way We Fly
1997 – On Top of the World
2005 – Good Goes Around
2010 – Keep Climbing