Who does Charley consult about his experience on the third level?

In The Third Level, Charley consults his psychiatrist friend, Sam, about his experience on the mysterious third level at Grand Central Station. Charley hopes that Sam can help him make sense of his strange encounter and determine whether the third level is real or a figment of his imagination. Sam, however, dismisses Charley’s experience as a “waking dream wish fulfillment,” suggesting that Charley’s vision of the third level is merely a psychological escape from the stresses of modern life. Despite Sam’s skepticism, Charley remains intrigued and continues to search for answers, reflecting his yearning for a simpler, more peaceful time.

This question related to Chapter 1 English Vistas Class 12th NCERT.
From the Chapter 1. The Third Level.
Give answer according to your understanding.