Ti-83 Plus Se Basic Laguage Help

I have a TI-83 Plus SE, and I am writting a game where two people input different numbers and the person on the opposite calculator has to guess it. The first one to guess wins. My question is how do I make the calculator display the text to let them know when they have lost. I am writting it in BASIC not Assembly. You can get the one player version here. I haven't got far on the 2-player part yet. Although when finished, I will add it to the 1-player game to form one program. Please help.

 

Problem Solved.