last call
The very last opportunity to do or order something. The bartender is doing last call—do you want another drink? This is the last call for flight 408 to New Jersey. Any passengers not already on board please report to terminal three immediately.
last call (for something)
and last chance (for something)Fig. the last opportunity for doing, getting, or having something. This is the last call for ice cream and cake. It's almost all gone.