Charmander and Pikachu Conversation Translation

Pikachu and Charmander are having a conversation, but of course we don't understand it. Your job is to translate the conversation. I've put down a code for translating this conversation. This is a little game I made up for fun. Enjoy.

 

Charmander : What's that noise? Is it Pikachu?

Pikachu: Piika piika! I can't stop laughing.

Charmander: Charmander?

Pikachu: It's about Truf.

Charmander: What's about Truf?

Pikachu: It's really funny. It happened when you left.

Charmander: Really, what?

Pikachu: