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 he told me I had to work overtime , that was it .  
 Person2:The last straw , huh ?  
 Person1:        Yes , he's really pushed me too far .  
 Person2:I know what you mean . 

formal