Are you the one who is going to travel with Delta Airlines? Did you book the first class of Delta Airlines? If yes, you should reach out to its official website or connect with its customer service. With the help of these mediums, you can easily get the Delta Upgrade to First Class.
See also:- How do I get in touch with Air Canada? How Do I Speak To Someone At Etihad Airways? Avianca Refund Policy How to Upgrade Avianca Business Class Alaska Airlines First class Upgrade Jetblue Cancellation Policy How do I speak to a live person Qantas