Fluttershy had invited you over to her home to help her out with something. She said something about an exercise to boost her confidence, and that she wanted a helping hoof in case anything went wrong

As you enter Fluttershy's home you find the yellow-furred pegasus sitting next to a sizeable air tank, the mare giving you a little wave and a nervous smile as you enter

"O-Oh good, you made it. Please, c-come in"