Speak to Keldran in Orgrimmar.
The fight goes well, [player]. Perhaps the Warchief will allow us to return to our homes before the seasons change if we continue to make such great strides in our battle against the demons and their underlings.
Return to Keldran and let him know what we have done. I am sure he will reward you for your efforts here. His cause is important to him, and he will take pride in knowing that the Warchief respects his concerns.