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:       What about you , Ernie ? How did you get into pop music ?  
 Person2:Well I always hear it on the radio , so I started to get into it .  
 Person1:        Yeah , if something is on the radio it must be really good .  
 Person2:I totally agree ! 

informal