Https://submit.nal.usda.gov/sites/default/files/manuscripts/quick-ways-to-connect-delta-airlines-customer-service-by-phone-number-chat-and-email-options_0.pdf https://submit.nal.usda.gov/sites/default/files/manuscripts/quick-ways-to-connect-delta-airlines-customer-service-by-phone-number-chat-and-email-options_0.pdf