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:       Hi , Linda . I haven't seen you for ages .  
 Person2:Yes . I miss you very much .  
 Person1:        So do I .  
 Person2:Have you graduated from college ?  
 Person1:        Yes . I graduated last year and got a job in a press . 

informal