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:       Jenny , what's wrong with you ? Why do you keep weeping like that ?  
 Person2:Mary told me that she had seen you with John last night . I got to know the fact that you are playing the field .  
 Person1:        Honey , cross my heart , I'v never looked at another woman since the first day I set my eyes on you ! Believe me , that's the truth . 

formal