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:       How are you doing ?  
 Person2:I'm pretty good , you ?  
 Person1:        I'm awesome .  
 Person2:How long have you been on the bus ?  
 Person1:        I've been on here for like , 15 minutes .  
 Person2:Do you catch this bus a lot ?  
 Person1:        Not much , I have a car .  
 Person2:So , you have your own car ?  
 Person1:        I sure do .  
 Person2:Then , why are you on the bus with me ?  
 Person1:        I'm waiting till our President gets out of office , and the gas prices go down .  
 Person2:That's good thinking . 

informal