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:       Lester , you are really fantastic at automobile repair .  
 Person2:Thanks , June . But I think I need to be certified as a mechanic before I ’ m allowed to repair cars for a living .  
 Person1:        That ’ s not a big problem . There are many small schools for adults like you who can study to be certified .  
 Person2:I guess I never thought of that before .  
 Person1:        And you can easily get a student loan from a vocational school , or from the government .  
 Person2:Wow , you ’ Ve inspired me to do something ! 

informal