Definition: You are given a conversation between two people. 'Person1:' and 'Person2:' are used to separate their respective dialogues. You are required to assign a label 'formal' if there is an absence of emotion and a presence of questions anywhere within the conversation. If such pattern is not found assign the label 'informal'.
Input:  Person1:       Hey , May . How about getting together for a movie tonight ? 
 Person2:Sure . What's playing ? 
 Person1:        Well , Let me check the newspaper . What about The Terminal ? 
 Person2:Wow , it stars Catherine Zeta-Jones , my favorite actress . 
 Person1:        Well , birds of a feather flock together . I like her too . She was in a lot of dramas . 
 Person2:She is so beautiful and elegant . And she is famous for her fine acting . 
 Person1:        What's more , she doesn't have scandals . And she likes to take part in the charitable activities . 
 Person2:Who is the director ? 
 Person1:        Steven Spielberg . Another superstar . 
 Person2:Yes , a legend , also . I still remember , his movies , Jurassic Park and Schindler's List got him nine Oscar awards in 1994 . 
 Person1:        Can you introduce the story of The Terminal briefly ? 
 Person2:It tells a romantic and humorous love story . 
 Person1:        This is really exciting movie . Lets go to this one . 

informal