This is what you heard:https://hub.united.com/en-us/news/company-operations/pages/united-fantasy-flights.aspx
This was a UAL flight, doing a Fantasy flight to the North Pole. Since this is their 20th year doing it, they decided to branch out and do this at more than one airport:
This year, we will host Fantasy Flights in all of our hub cities – Chicago, Cleveland, Houston, Denver, Los Angeles, Newark, N.J., San Francisco and Washington, D.C. – as well as Boise, ID., Phoenix, San Antonio, Texas, and Sydney.
You just happened to catch that clip! Well done.