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:       He thought he could take Jimmy in , but you know , Jimmy is no fool .  
 Person2:So ?  
 Person1:        So Jimmy just took him in instead and it cost him an arm and a leg .  
 Person2:You mean finally Henry bought the broken car himself .  
 Person1:        Exactly . Herry is almost broken now . 

formal