I hate when people walk up to me first thing in the morning and just start talking business. How hard is it to say "good morning" before you start asking me to do things or asking me for something? Give me just a bit of common courtesy and maybe I will be more inclined to help you out. Otherwise, I feel like I am just a slave to do your bidding. I am not a human being. I don't have to be acknowledged. Well, who wants to be treated like that?!
It doesn't have to be a long conversation. Just two little words to pave the way to uglier things. They say that you should always start your day off on the right foot. Get your mind right and it will help the day go smoother. I think showing someone that you care just a little bit about them will go a long way to having a better day with them. We work enough throughout the day that I think we can spare a few seconds of kindness and decency.