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:       Hello , Julia , I know a party that will begin at midnight . Would you love to go ? 
 Person2:I'd love to , but my mother asks me to go home before 11:00 every night . She will worry if I get home late . 
 Person1:        What a pity ! The party is very interesting . 
 Person2:I have no choice . My mother is always very strict with me . 
 Person1:        Don ’ t complain about it . She is concerned about your safety . 
 Person2:You're right . Mother's love is the greatest love in the world . 

informal