<P> Coordinates: 32 ° 50 ′ 48" N 96 ° 51 ′ 40" W ﻿ / ﻿ 32.8467 ° N 96.861 ° W ﻿ / 32.8467; - 96.861 ﻿ (Southwest Airlines Headquarters) </P> <Table> Southwest Airlines <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> <Table> <Tr> <Th> IATA </Th> <Th> ICAO </Th> <Th> Callsign </Th> </Tr> <Tr> <Td> WN </Td> <Td> SWA </Td> <Td> SOUTHWEST </Td> </Tr> </Table> </Td> </Tr> <Tr> <Th> Founded </Th> <Td> March 15, 1967 (1967 - 03 - 15) </Td> </Tr> <Tr> <Th> Commenced operations </Th> <Td> June 18, 1971 (1971 - 06 - 18) </Td> </Tr> <Tr> <Th> AOC #</Th> <Td> SWAA304A </Td> </Tr> <Tr> <Th> Operating bases </Th> <Td> <Ul> <Li> Atlanta </Li> <Li> Baltimore </Li> <Li> Chicago--Midway </Li> <Li> Dallas--Love </Li> <Li> Denver </Li> <Li> Houston--Hobby </Li> <Li> Las Vegas </Li> <Li> Oakland </Li> <Li> Orlando </Li> <Li> Phoenix--Sky Harbor </Li> </Ul> </Td> </Tr> <Tr> <Th> Focus cities </Th> <Td> <Ul> <Li> Austin </Li> <Li> Fort Lauderdale </Li> <Li> Los Angeles </Li> <Li> Nashville </Li> <Li> Sacramento </Li> <Li> San Diego </Li> <Li> San Jose (CA) </Li> <Li> St. Louis </Li> <Li> Tampa </Li> </Ul> </Td> </Tr> <Tr> <Th> Frequent - flyer program </Th> <Td> Rapid Rewards </Td> </Tr> <Tr> <Th> Fleet size </Th> <Td> 731 </Td> </Tr> <Tr> <Th> Destinations </Th> <Td> 99 </Td> </Tr> <Tr> <Th> Company slogan </Th> <Td> "Low fares . Nothing to hide . That's Transfarency ." </Td> </Tr> <Tr> <Th> Traded as </Th> <Td> NYSE: LUV DJTA Component S&P 500 Component </Td> </Tr> <Tr> <Th> Headquarters </Th> <Td> Dallas, Texas, U.S. </Td> </Tr> <Tr> <Th> Key people </Th> <Td> <Ul> <Li> Gary C. Kelly (Chairman and CEO) </Li> <Li> Tom Nealon (President) </Li> <Li> Mike Van de Ven (Chief Operating Officer) </Li> <Li> Colleen Barrett (President Emeritus) </Li> </Ul> </Td> </Tr> <Tr> <Th> Revenue </Th> <Td> US $21.171 billion (2017) </Td> </Tr> <Tr> <Th> Operating income </Th> <Td> US $3.515 billion (2017) </Td> </Tr> <Tr> <Th> Net income </Th> <Td> US $3.488 billion (2017) </Td> </Tr> <Tr> <Th> Total assets </Th> <Td> US $25.110 billion (2017) </Td> </Tr> <Tr> <Th> Total equity </Th> <Td> US $10.430 billion (2017) </Td> </Tr> <Tr> <Th> Employees </Th> <Td> ~ 57,112 (2018) </Td> </Tr> <Tr> <Th> Website </Th> <Td> www.southwest.com </Td> </Tr> </Table> <Tr> <Td_colspan="2"> <Table> <Tr> <Th> IATA </Th> <Th> ICAO </Th> <Th> Callsign </Th> </Tr> <Tr> <Td> WN </Td> <Td> SWA </Td> <Td> SOUTHWEST </Td> </Tr> </Table> </Td> </Tr>

What are the main hubs for southwest airlines
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