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 ’ m trying to decide what school to apply for .  
 Person2:Are you thinking about a public school or a private one ?  
 Person1:        I ’ m not sure . What ’ s the difference between them ?  
 Person2:Public schools are usually state funded , whereas private schools usually get their funding elsewhere .  
 Person1:        Which is better ?  
 Person2:One isn ’ t necessarily better than the other . It depends a lot on the school administration and the teachers .  
 Person1:        I hear you have to wear uniforms at private schools .  
 Person2:Yeah , sometimes . 

formal