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 there ! My name ’ s Terry Graham . You ’ re new around here , huh ?  
 Person2:Yes . My name ’ s Mark Benson . I just started a couple of weeks ago .  
 Person1:        Well , if there ’ s anything I can do for you , let me know .  
 Person2:Thanks , I appreciate that ! 

informal