<prompt> Human: I recently booked an airbnb car rental for a vacation with my friends. I know that they will pay me back but if Im the one planning a vacation and using my credit card to pay these large amounts I expect my money back sooner than later. Im not barely getting by, by any means. I would just like to see my money back in a timely manner. How would you ask for their portion of the sum without sounding too pushy?  <response>: I need the money by the end of the month so I can pay my Credit Card bill. 