I was at the Car Pool getting Mrs. Astro 's car washed . I stood in front of the vending machine and decided I wanted a root beer . I reached for my wallet and started sifting through my receipts . I noticed I had two bills .
According to the above context, answer the following question.
Why was the person in front of a vending machine ?


He noticed he was thirsty and wanted some root beer to quench his thirst .