A week into summer break Harry decide to owl Draco. He was bored and had nothing else to do so he thought why not. After all the Dursleys had been acting strange, they were ignoring him and it was starting to freak him out.
He sat down to write the letter and realized he didn't know what to right.
Dear Dragon
How has you summer been is Dove doing well? Mines been good so far The Bee hasn't done anything yet, and BW and carrot have yet to wright.
Sincerely,
Basilisk
It was short and simple. They had agreed on pen names and code word in case some one intercepted the letters. Harry was dubbed basilisk for the events of second year. Draco had dubbed himself dragon. They agree to call Dumbledore The Bee, Hermione BW (bookworm), and Ron carrot. Draco's father Lucas Malfoy was dove, and so on.
He tied the letter to Hedwigs leg told her to find the dragon, and being the brilliant owl she was she understood the code names after he explained it to her, after she was out the window and out of sight he laid on his bed and stared at the ceiling. Deciding that this was not the best way to spend his summer Harry stood and headed down stairs. The Dursleys were out so he could do what ever he wanted. As that though crossed his mind he got an idea. Running up to grab his invisibility cloak and wand he jogged a short distance away from the house before calling for the knight bus.
Time to go to Diagon Alley.