Помогите пожалуйста составить диалог на одну из картинок

Photo B

[Mary]: Hi, Sam. How are you? Why do you look so sad?

[Sam]: Hi, Mary. I am bad. I have just failed my math exam.

[Mary]: I am sorry. Do you have to take it again?

[Sam]: Yes, I am going to take next Monday.

[Mary]: Then you have much time to get ready for the test.

[Sam]: Yes, but don't understand anything.

[Mary]: It's not a problem. I can help you if you want.

[Sam]: Do you know math well?

[Mary]: I have passed this exam with excellent mark. You shouldn't worry.

[Sam]: Ok, thank you. So, when can you help me?

[Mary]: I can do it tomorrow in the morning. Will you be ready at that time?

[Sam]: Of course. Thank you! I have to go now. See you tomorrow! Goodbye!

[Mary]: Ok. See you tomorrow! Bye!