Dialect is an important aspect in story-telling (or in poetry). The use of dialect reflects the background of the character/s.
For example, in "The Joy Luck Club" by Amy Tan, one of the characters is a Chinese mother. The following displays how dialect is shown in a story:
“Aiii-ya. So shame be with mother?” She grasped my hand even tighter as she glared at me.
I looked down. “It’s not that, it’s just so obvious. It’s just so embarrassing.”
“Embarrass you be my daughter?” Her voice was cracking with anger.
“That’s not what I meant. That’s not what I said.”
“What you say?”
In the book, A Dictionary of Literary and Thematic Terms by Edward Quinn, Dialect is defined as:
"A particular variation of a language spoken by members of a class or region. A dialect may include a distinct vocabulary, syntax, conversational style, or accent. In rendering a specific accent, many contemporary writers attempt to capture its distinctive features without resorting to the distracting practice of phonic spelling, which was a feature of dialect writing around the turn of the century."