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:       Let's take a coffee break , shall we ?  
 Person2:I wish I could , but I can't .  
 Person1:        What keeps you so busy ? You've been sitting there for hours . You've got to walk around.You just can't stay on the computer forever .  
 Person2:Well , I am up to my neck in work . I've got to finish this report . Sarah needs it by noon . I don't want to be scolded if I can ’ t finish my work by the deadline .  
 Person1:        I understand that , but you'd feel better if you took a break , even for just a short while . 

formal