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's going on here ?  
 Person2:You mean , what's happening ? Well , constable , I'm trying to get out of the windowand Fred here is helping me .  
 Person1:        Why are you climbing through the window and not leaving by the front door ?  
 Person2:Well , you see I can't find the key and I'm in a hurry . Come on , Fred , We're wasting time .  
 Person1:        Just a minute you two . I don't think you're telling me the truth . This isn't poorhouse , is it ?  
 Person2:No , it's my brother's . I'm staying with him for a while .  
 Person1:        Is he at home ?  
 Person2:I'm afraid not . He's in jail for house-breaking at the moment . 

formal