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:       When she told me that she would marry no man but Dick , my heart was almost in my mouth .  
 Person2:You were scared , too ? I dared not tell you my feeling when I heard that . I almost got fainted .  
 Person1:        I could not and can ’ t make out the reason why she would set her heart on a man like Dick . He plays the field with many girls .  
 Person2:But Sarah says she does not care , so long as he loves her . 

informal