Harry: 

YOURS: "I'm so sorry!! Wahh!! I'm so stupid!! Are you okay!? How can I repay you!?" 

HIS: "Don't worry, it's okay." 

Ron:

HIS: "Go ahead."

YOURS: "Thank you." 

Draco:

HIS: "It's 06:35 in the morning, what the bloody hell are you doing out here?" 

YOURS: "Reading a book. And why the bloody hell would you care?" 

Fred:

HIS: "You all weet there, missy? Hahaha!! What can I do to help you?" 

YOURS: "What? You prank me and expect no consequences?" 

George:

HIS: "Hey, you okay there?" 

YOURS: "Yeah, I'm okay. Thanks for catching me." 

Blaise:

HIS: "The hell's wrong with you! Do you want me dead!" 

YOURS: "What? Did I scare you?" 

Cedric:

HIS: "What are you stressing about? If I can, I would gladly help you with it." 

YOURS: "Sure. Can you help me with this stupid essay for Herbology? It's about Fluxweed and I seriously can't understand the meaning of its name." 

Viktor:

YOURS: "My friend wants your autograph and she's too shy to come to get it herself." 

HIS: "It would be my pleasure..?" 

Seamus:

YOURS: "Hey, tell me which are better. The sweets, I mean."

HIS: "Why not just get both?"