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:       A friend of mine is now in the big house . He was caught red-handed for selling cocaine .  
 Person2:That is a deadly risky business . He should have it coming on him .  
 Person1:        He must be regretting about having done the business .  
 Person2:I bet he is . He domed his own life . 

informal