<prompt> Human: I booked a flight with Delta Air Lines a few months ago from Lagos to NYC with a layover in Paris. I booked this particular flight because it was scheduled to arrive in JFK by around 11 AM on Christmas Day.When I got to the airport in Lagos, I received an e-mail from Delta that my flight from Paris to NYC was cancelled, but that Delta had rebooked me to fly from Paris to Detroit and from Detroit to NYC, with a 1.5 hour layover in Detroit. My new final arrival time in NYC was scheduled for 5 pm Christmas Day.However, my flight from Paris to Detroit departed late and we did not land in Detroit until 30 minutes before the departure of my connecting flight to NYC. Because I had to go through customs and security, I unsurprisingly missed my last flight.Although Delta did book me another flight for the next day arrived by 12 noon on Dec 26, and did give me a voucher for overnight accommodations, I did not receive the service for which I paid. I am willing to spend however long is necessary to get a refund for my flight.My questions are: what consumer protections am I eligible for? Am I automatically eligible for a refund? I have a number from corporate to call. What should I ask for, and should I record the phone calls? What records should I keep? Broadly, what advice can anyone give me for this process?Thank you very much in advance for any help.  <response>: what consumer protections am I eligible for?Probably none at this point. You were rebooked at no additional charge and got a voucher. Delta does not owe you anything at this point.What should I ask for, and should I record the phone calls? You should ask for a refund and lay out your reasons why you think you deserve one. Phone recording laws vary by state, and Delta probably wont talk to you if you record the conversation. 