A                                                        B

Greet                                            Greet

What class do you have?

                                                 I have... it's.....

That's true!

I have... it's.....

                                                What do you need for (the class you just said)?

I need (2 things)

zut! do you have (1 of the 2 things)

                                                  Sorry, I don't have (DE)..... I need... do you have?

Yes, here it is

                                                   Thanks, bye

Welcome, bye