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:       Jimmy , I ’ d like to wear this robe for tonight cocktail party . What do you think of it ?  
 Person2:Don ’ t dress like that . You ’ ll make fool yourself . You look stupid in that robe .  
 Person1:        What ? But it is my favorite piece of clothing .  
 Person2:Maybe it is . But it ’ s out of fashion .  
 Person1:        What am I going to do ?  
 Person2:Let ’ s go downtown and pick up some fashionable clothes for you . 

informal