ugh.. there are many passwords in that day and only 1 password that lead to save Benson... Did you already get one of it? if not, try to think what Orlando said in the hospital first.
If you struggle with the Orlando part, you can play Hoss' route first. At some point, Hoss finds a paper with a bunch of passwords and two of them work. With the Roswell's part, I can't really add anything that ice bear san already said (just write down any suspicious words. Also, Dave repeats the password after Roswell, so maybe use this as a hint).