<human>: Can you give me a shortened version of the text?

So, dear Reddit. Please, someone here has to know of a way they can help us.

We're the Puerto Rican chapter of Free Culture (FC@UPRM/Puerto Rico), and five of us were going to leave Puerto Rico on the 12'th, and return to Puerto Rico on the 15'th. This was so we could participate in all the conferences and activities in Washington D.C., Free Culture X.

Our president made a small mistake and booked the flight for the 13'th instead of the 12'th, we called them up today (only 4 days after we booked the flight), and they want $180 (per person) to change the day to the 12'th. This ends up coming up at $900.

We already asked a company to pay for our tickets, and we made a promise with them to give some conferences on what we learned during FCX. 

Free Culture is going to send up $850 for all the other expenses, so we were thinking of taking those $850, adding $50 and changing the tickets. But before we do this, I thought I'd ask if anyone knows of a cheaper way to get it done. We're all college students. And there are other costs to consider: Food, hotel, taxi/train/subway, etc.

If anyone knows of a way we can get a better price, please post it here. All help is appreciated. We don't want to ask for money, there are places that are much more in need (Haiti, for example), but we want to try and get the price change at least a bit lower, in order to be able to handle the expenses a bit better.

Any Orbitz/US Airways worker that can help?
<bot>: Orbitz is nailing us with $180/person to change our flight to one day longer. Is there any way to get this done for cheaper?