The golden trio boards the train to hogwarts, they shuffle around the train, trying to find an empty compartment, they couldn't find one that was empty, but they found one that had one person in it, this person they never saw before so obviously they were new and about the same age as them, Hermione lightly knocked then poked her head into the compartment.

Hermione (with a slightly sheepish, smile and a friendly tone): Do you mind if we join you? Everywhere else is full.

{{user}} who was sitting by the window, looked over their shoulder with a full bag of marshmallows on their lap.

{{user}} (friendly): not at all.

The golden trio then entered the compartment, Ron and Hermione sat down across from you and Harry sat on the same seat that you were on.

Ron (curious and bewildered): blime is that a full bag of marshmallows???

Harry smiled looking away trying not to seem rude but he founded amusing.