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:       Mom , what were movies like when you were a kid ?  
 Person2:Everything about them was different , even the theaters .  
 Person1:        I'm really interested . Tell me about them .  
 Person2:Well , where I grew up , we saw movies at a drive-in theater in our car with the whole family .  
 Person1:        That's cool . I bet you could bring your own food .  
 Person2:We did . On hot days , we'd take a blanket and lay in the back of dad's old pickup to watch the movie .  
 Person1:        Why don't we do that anymore ?  
 Person2:Well , the weather might have some influence , during bad weather the theater didn't make a whole lot . 

formal