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:       Did you punch in ?  
 Person2:Yes . By the way , you are having a great make-up today . I like the color of your lipstick . So adorable !  
 Person1:        Really ? It took me really a while to find the color . I am happy you like it .  
 Person2:Well , girls like us are happy to spend our time on those kinds of things . Actually , do we still have a meeting this afternoon ?  
 Person1:        Sure , when those never ending meetings . 

informal