A student buying food at the canteen in a conversation

i think its a.

an ugly duckling is teased by the other ducklings. when she grows up, however, the ducklings discover that she is a beautiful swan

i may be wrong but i think your answer is flashback

connections  to the  book night by elie wiesel.   elie wiesel  is a holocaust survivor. as a young, jewish boy he was taken from his home with his family by the nazis. he was taken because he is jewish.