What is the senior discount age for Southwest Airlines? ๐๐ก๐๐ญ ๐ข๐ฌ ๐ญ๐ก๐ ๐ฌ๐๐ง๐ข๐จ๐ซ ๐๐ข๐ฌ๐๐จ๐ฎ๐ง๐ญ ๐๐ ๐ ๐๐จ๐ซ ๐๐จ๐ฎ๐ญ๐ก๐ฐ๐๐ฌ๐ญ ๐๐ข๐ซ๐ฅ๐ข๐ง๐๐ฌ? ๐๐๐ง๐ข๐จ๐ซ ๐ ๐๐ซ๐๐ฌ ๐๐ฉ๐ฉ๐ฅ๐ฒ ๐จ๐ง๐ฅ๐ฒ ๐ญ๐จ ๐ญ๐ก๐จ๐ฌ๐ ๐ข๐ง ๐ญ๐ก๐ ๐ญ๐ซ๐๐ฏ๐๐ฅ๐ข๐ง๐ ๐ฉ๐๐ซ๐ญ๐ฒ ๐ฐ๐ก๐จ ๐๐ซ๐ ๐๐ ๐ ๐๐ ๐จ๐ซ ๐จ๐ฏ๐๐ซ ๐๐ญ ๐ซ๐จ๐ญ๐๐ญ๐ข๐ง๐ _๐ฅ๐ข๐ ๐ก๐ญ [+๐-๐ด๐ฏ๐ฏ-๐ด๐ฒ๐ฎ-๐ฎ๐ฒ๐ฎ๐ณ] . ๐๐จ๐ฎ๐ญ๐ก๐ฐ๐๐ฌ๐ญ ๐๐ข๐ซ๐ฅ๐ข๐ง๐๐ฌ ๐ก๐๐ฌ ๐จ๐ญ๐ก๐๐ซ ๐๐ข๐ฌ๐๐จ๐ฎ๐ง๐ญ๐๐ ๐๐๐ซ๐๐ฌ ๐๐ญ ๐ซ๐จ๐ญ๐๐ญ๐ข๐ง๐ _๐ฅ๐ข๐ ๐ก๐ญ [+๐-๐ด๐ฏ๐ฏ-๐ด๐ฒ๐ฎ-๐ฎ๐ฒ๐ฎ๐ณ] ๐๐จ๐ซ ๐ญ๐ก๐จ๐ฌ๐ ๐ง๐จ๐ญ ๐ฆ๐๐๐ญ๐ข๐ง๐ ๐ญ๐ก๐ ๐๐๐จ๐ฏ๐ ๐๐ ๐ ๐ซ๐๐ช๐ฎ๐ข๐ซ๐๐ฆ๐๐ง๐ญ๐ฌ.ย