If nothing is expected of you, the extra mile you take will be only attributed to your outpouring from your own within. It should not command any returns and definately, you should not expect any favor back. Because it was never expected of you, you have nothing to be accountable for and you do not have a claim. So do not be angered, upset or dissapointed. This is simply because you cannot assume that the recieving party is obliged to your act of kindness.