Delta Airlines on flight DL964 on 20 Oct 40. The entire crew, front and aft, were first class. Same goes for the Delta Airlines chap who checked us in for the Orlando-Atlanta flight on 28 Oct 04.
The airline obviously is working damn hard to get through this time, when many US airlines are experiencing financial difficulty, by providing genuine customer service.
Good luck to all at the airline and may you all enjoy success.