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:       How can I get my driver's license ?  
 Person2:Have you taken your driving test yet ?  
 Person1:        I have yet to take my driving test .  
 Person2:Okay , first I'm going to need you to fill out the paperwork .  
 Person1:        When can I take my test ?  
 Person2:You'll have to make an appointment for that .  
 Person1:        I would like to make one right now .  
 Person2:How does Friday sound ?  
 Person1:        That would be great .  
 Person2:What time would you like to take the test ?  
 Person1:        If I could do it in the morning , then that would be good .  
 Person2:Eleven o'clock on Friday morning . See you then . 

informal