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:       It ’ s over .  
 Person2:What is over ?  
 Person1:        Our relationship . I mean my friend and I ...  
 Person2:Any reasons ?  
 Person1:        The cause is another boy .  
 Person2:Oh , that ’ s too bad . 

formal