Dialogue 1: Language is never ever ever random. 

​In the first dialogue, a student is excited to be starting a course focusing on phrasal verbs. He has an interesting relationship with his teacher as you can tell from their banter.

Dialogue 2: 

Dialogue 3:

Dialogue 4:

Dialogue 5:

Dialogue 6:

Dialogue 7: Not another new app! 

Dialogue 8: Conflict resolution

Dialogue 9:  Every teacher's dream

Dialogue 10

Dialogue 11

Dialogue 12

Dialogue 13

Dialogue 14:

Dialogue 15:

Dialogue 16: