Tourist: "Thank you.

Tourist: "Yes, I've noticed ithat.

Resident: "Bye."

Tourist: "Good morning ma'am.

If you are writing the dialog like the script for a play or movie scene, with the speaker's name followed by a colon, you don't need quotation marks. We use quotation marks to set off dialog from narration or description.

Could you please tell me the best way to get to the park?"

Resident: "Of course.

After that, walk two more blocks, and you will have arrived'll be at the park."

Your sentence is correctly written. It is quite formal.
We usually use "arrive" and "depart" for planes, trains, and busses.
As a native speaker, I would say (you will be = you'll be).

Tourist:" Thank you.

I just hope I don't get lost because this is my first time in the city."

Resident: "Don't worry friend.

In some cities, the locals might call a tourist "friend" after talking for a minute, but I would not do this.

The people here are very kind and helpful."

Tourist: "Yes, I've noticed ithat.

It's more idiomatic to say it this way.
"Noted" suggests the tourist is a reporter who wrote this information down in a note.

Okay , [I need to go].

This is kind of humorous, but "I need to go" also means "I need to pee," so it might be better to say
"I should get going" or "I need to get going" or "I should be on my way" etc.

Thanks for your help."

Resident": [Bye."]

The kind and helpful resident might say something more than "Bye" to end the conversation.
"Enjoy your visit" might be a good choice.