Questions about Medallion status, special assistance for passengers with disabilities, frequent flier points, and other travel-related services Delta Airlines Chicago Office can be sent to the Chicago office. The customer care team at Delta is equipped with the necessary training to address any problems or queries travelers may have and offer solutions for flight delays, cancellations, or modifications. The office’s round-the-clock customer service guarantees that you may get help for any questions at any time, assuring a smooth travel experience. accessing lounge facilities, Delta’s Chicago office offers prompt, courteous assistance. The office’s round-the-clock customer service guarantees that you may get help for any questions at any time, assuring a smooth travel experience.