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:       hello , Kate ! How are you doing ?  
 Person2:fine , thanks . How are you ?  
 Person1:        fine . How are your term papers ?  
 Person2:oh , my lord . I haven't really started them .  
 Person1:        how could it be ? They are due two weeks later .  
 Person2:I know but I was busy with my part-time job the last few days .  
 Person1:        Kate , you know , I am thinking of getting a part-time job next year because I really need more money and I don't want to ask my parents for any more . But I'm so busy ! How am I going to work and study  
 Person2:to be honest with you , Jason , I don't think I'm doing a very good job of balancing my schoolwork with my job . I'm always two steps behind . I've got to get back to the dorm and continue writing tha  
 Person1:        my advisor ? 

informal