I quickly ran to the counter with the two baht to change them into one baht coins.
One counter was closed while the other had a long queue.
Rushed back to my cousin who was waiting for me at the machine to ask him to give way to the people behind in the queue first before going back to queue to change the coin.
Surprisingly, he had managed to purchase the ticket as the young boy behind him gave him the one baht coin we were short of.
In return for his kindness, I gave the two baht coin to him.