percakapan tentang congratulations on someone's graduation

A : Hey, congratulation on your graduation!
B : Oh hei, thank you so much!
A : I hope you will get a job that you want.
B : yeah, aamiin.

A : hi B ! how are you ?
B : hi A ! i am fine, thanks
A : B, i heard that you pass the exam, congratulation for your graduation
B : thanks
A : we should celebrate it, maybe you should treat me
B : that sound like a good idea. Okay i will treat you in the restaurant
A : really ?
B : yes, i a serious