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:       Hey , Brad . How was your day ?  
 Person2:Pretty good . Where are you going ?  
 Person1:        I'm going home .  
 Person2:Wait . We have to return to our homeroom and wait to be dismissed .  
 Person1:        Is that right ?  
 Person2:Our homeroom teacher has to take attendance again to make sure that we're all here .  
 Person1:        So he takes attendance once in the morning and once in the afternoon .  
 Person2:Yeah . I'm going to my locker to get my jacket . Catch you later . 

informal