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:       Mr . Rogers ?  
 Person2:Mr . : Yes ?  
 Person1:        I'm not feeling too well .  
 Person2:Mr . : Would you like to go to the nurse's ?  
 Person1:        Yes , I would .  
 Person2:Mr . : Here's a hall pass for it . Do you need someone to walk you there ?  
 Person1:        I can manage on my own . Thanks .  
 Person2:Mr . : I'll drop by later to check on you . 

formal