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:       Have you ever run into a person who tries to bleed you white ?  
 Person2:I am always on the look out for such girls .  
 Person1:        I hear that some guys splash all their money about on them .  
 Person2:Mark is one of them . He has trouble with a girl who turned out to be a dead beat . 

formal