Pretending you care TIP #1

You can go very far in life by just pretending to care about whatever issue presents itself to your boss.
If it's a minor dissapointment a simple "Aw, that's too bad", validates their insignificant emotions and implies that you are an empathic individual, someone worth keeping around when problems arise.
If it is a major complication however, first you need to scan your memory to make sure it wasn't your fault. Then contort your face into a look of mild discomfort, this will suggest that you are as upset as your boss is. Then utter the words "What are they going to do about it". This will sound as if you understand the situation and do care, but does not place you in the position of having to take care of the problem. But if you must handle the problem, see if you can put it off until your contract expires.