https://european-social-fund-plus.ec.europa.eu/en/social-innovation-match/partner/changing-flights-call-delta-airlines-customer-service-1-800-260
https://european-social-fund-plus.ec.europa.eu/en/social-innovation-match/partner/hassle-free-flight-changes-delta-airlines-dial-1-800-260-8820
https://european-social-fund-plus.ec.europa.eu/en/social-innovation-match/partner/southwest-airlines-flight-change-contact-1-866-829-1536-quick
https://european-social-fund-plus.ec.europa.eu/en/social-innovation-match/partner/need-revise-your-travel-plans-call-southwest-airlines-1-866-829
https://european-social-fund-plus.ec.europa.eu/en/social-innovation-match/partner/easily-change-your-southwest-airlines-flight-calling-1-866-829-1536