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:       As you know I ’ Ve been thinking about moving my career in a new direction . I am hoping that you will be able to provide me with a reference to help me jump-start my future .  
 Person2:I realize that I ’ m not in a position to offer you the kind of promotion you deserve I'll gladly do what I can to help .  
 Person1:        Thank you . I ’ Ve really enjoyed my time here . I've grown both personally and professionally with this company .  
 Person2:And , as well as being a pleasure to work with , you ’ Ve been instrumental in helping us complete many key projects .  
 Person1:        It will be hard to say good-bye . This office has become like a second home to me .  
 Person2:My feelings are mixed on the issue too . By helping you I ’ m losing a valuable and trusted employee . However I think you are taking a step in the right direction . 

informal