Amy:- “Hello Anna what's going on?, how are you?”

I use quotation marks when writing a dialogue. Maybe in a language other than English, a dash is used to indicate dialogue.

Anna:- “I am good ,w. What about you ?”

Amy:- “I am also good.”

Amy:- “Did you finish your homework ?”

Anna:- I had the homework yesterday, are “I finished yesterday’s homework (?). Did you done your ?s?”

Or, “…Are you done with yours?”

Amy:- y “ Yes, I had somefinished some of it, but the remaining homework make's meis confusing, c. Can you help me to do my homework ?”

Or, “… I am confused by the remaining homework…”

Anna:- “Of course, why not ,it'? It’s my pleasure to help you .”

Amy:- Hello Anna, what's going on?

Anna:- I am good ,what, how about you ?

"I'm good, how about you?" might sound more natural.

"What about you?" is usually referring to a what-question ("What do you want to eat for dinner?") rather than a how-question ("How are you?"). This is debatable in this case because your original question was "what's going on?" but the answer was "I am good," so you can take this with a grain of salt.

Anna:- I had the homeworkfinished it yesterday, are you done with your s?

Amy:- yYes, I hadid some, but remain homework make's me of it, but there's still some homework that's confusing, c me. Can you help me to do my homework ?

Anna:- Of course, why not ,i? It's my pleasure to help you .

"Why not" is a question here, even if rhetorical.