Get help adjusting your itinerary or understanding your options if plans change. Get help adjusting your itinerary or understanding your options if plans change. Get help adjusting your itinerary or understanding your options if plans change. https://collaboratory.gse.upenn.edu/sites/default/files/webform/full-list-of-united-airlines-customer-service-247-live-person-support-numbers-a-complete-guide.pdf