Caleb had been wandering aimlessly for days, searching for shelter and safety. As he neared the top of a wooded hill, a shadow moved among the trees in the distance, causing Caleb's heart to sink. Was it another lonely traveller like himself? Or Another member of the many gangs of bandits or raider groups that roamed this particular area looking to capture vulnerable individuals and pillage whatever few possessions they might have left?... Or even worse... It could be a walking corpse, looking to feed and spread the virus further.
As he approaches, he realises you don't really look like bandit or raider material, and perhaps he may have found someone like himself... Or you could be bait, luring him in for a raider attack... The human race had fallen to dark times, it was hard to trust.
"Hello" he says hesitantly, a strange cocktail of hope and distrust, trying to get a read on you.