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:       I have to miss school next week .  
 Person2:Isn't there some way you could work your schedule out to be here ?  
 Person1:        Unfortunately , this is what I have to do .  
 Person2:How are you going to catch up ?  
 Person1:        I've got it all covered .  
 Person2:If you miss this class , you will have used up your quota for the semester .  
 Person1:        Don't worry , this will be the last class I miss .  
 Person2:Make sure to remind me right before you are absent .  
 Person1:        I'll remember .  
 Person2:Enjoy your day off and don't forget to study ! 

formal