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 , this is the admissions office . Can I help you ? 
 Person2:Hi . I ’ m calling about your continuing education program . 
 Person1:        What would you like to know ? 
 Person2:I want to become certified in computer programming . Do you offer any part-time courses for adult further education ? 
 Person1:        Yes , we offer both night and weekend courses in a number of different subjects . 
 Person2:How do I sign up ? 
 Person1:        If you give me your address , I can mail you an information packet and the application forms . 
 Person2:Great ! 

informal