Derpy knocked on the door of another house. This time she made sure it was the right address. The door opened and a light blue pony answered the door.
"Hi." she said.
"Well, hello there." said Derpy. "Guess what?"
"What?" asked the pony, giggling a bit.
"You got mail."
"Really?"
"Yeah." said Derpy, pushing a box in front of the pony. "This you?"
"Why, yes it is." said the pony, reading the label.
"YES!" yelled Derpy, cheerfully. "I got it right."
"Yes, you did." said the pony.
"It's my first time getting it right." said Derpy, leaning in a bit.
"Congratulations?"
"Thank you." said Derpy, smiling.
"So..." said the pony. There was an awkward silence before the pony spoke again. "What's your name?"
"Name's Derpy. Derpy Hooves."
"Hey, Derpy." said the Pony, smiling. "I'm Lyra."
"Hey, Lyra." said Derpy. "Does this mean we're..." She let out a gasp. "friends?"
"I guess it does."
"YIPPEE!" yelled Derpy, doing a back-flip. "We can hang out, like, all the time."
"Not right now, Derpy." said Lyra. "I'm kind of busy. Maybe later, though."
"All right, then." said Derpy, sliding the saddle bag back on her back. "See ya later."
"See ya, Derpy."
Derpy turned to leave but remembered something. She turned back to Lyra just as she was about to close the door.
"When's later?"
Lyra stopped what she was doing.
"What?"
"When's later?" asked Derpy.
Lyra thought about it for a minute.
"I don't know." said Lyra. "Later."
"Yeah, but..." Derpy was getting a little frustrated now. "what's later?"
"I have no idea." said Lyra. "Pick a time."
"5 at night."
"Going to a friend's party." said Lyra, shaking her head.
"6, then."
"Party's still going."
"7."
"The party'll be just getting over."
"8?" asked Derpy.
"I'll be too tired from the party."
Derpy took a deep breath.
"How about 9?"
Lyra thought for a second.
"9 sounds good." she said. "I can do 9."
"Yay!" shouted Derpy, "Girl's night out!"
"It could even be a sleepover." Lyra suggested.
Derpy's eyes lit up and she let out a cheerful gasp that lasted for about 10 seconds.
"So that's a yes?" asked Lyra.
"I'm there." said Derpy. "Gotta go."
Lyra smiled as Derpy left. She then closed the door and went back inside.
This chapter shows us your insight on humor.
Although it's fun to poke the other ponies with Derpy's silly ways, you might want to add more dept to it. Again: dialogs are needed to carry the mood. Show us what both ponies are feeling. How's derpy's expression. How's lyra's expression? What's going on with them that we can make it certain that we're poking lyra's patience to a thin thread? The dialogs by themselves are enough, true. But with a touch of extra detail, they can be so much more.