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:       I really want to switch things up .  
 Person2:What were you thinking ?  
 Person1:        I think I want to try a new style .  
 Person2:What would you like me to do ?  
 Person1:        I want you to cut my hair shorter .  
 Person2:How short ?  
 Person1:        I want my hair to be only a few inches long .  
 Person2:Do you really want it that short ?  
 Person1:        Yes , I've been wanting it short for a while now .  
 Person2:If you really want me to , then I'll do it .  
 Person1:        I'm absolutely sure that this is what I want .  
 Person2:Let's do it . 

formal