Answer:
to show how the narrator tries to persuade his/her father to let him/her become an artist
to show the narrator's childhood dream
Explanation:
The narrator Made use of flashback in to show in other to narrate what his dream was, as what he eventually became wasn't what he has always dreamt of becoming, so the narrator utilized flashback to take the readers through his childhood desire and aspiration. A natural desire which never manifested because his father never believed in his dream.
During the narrator's flashback, he showcased how he tried to fish his way into pursuing his dream, as a child, All he could do was to persuade his father into supporting him on his dreams, which also proved futile.