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:       Bye , mom !  
 Person2:Wait , Jimmy , it ’ s cold outside . Put a hat on !  
 Person1:        OK . Bye !  
 Person2:No , wait , you will be too cold without mittens .  
 Person1:        Alright . See ya !  
 Person2:Hold on , with that wind , you ’ re going to catch a cold . Wear this scarf .  
 Person1:        Ok , see you after school ...  
 Person2:Oh ... and ear muffs ! Put these on ... here we go .  
 Person1:        Mom ?  
 Person2:Yes , honey ...  
 Person1:        I ... I can ’ t breathe . 

formal