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:       I was wondering if you could help me to get a library card .  
 Person2:Of course , just fill out this form and let me know when you are finished .  
 Person1:        I'm finished .  
 Person2:I will also need your driver's license ; hand me the filled-out form , please .  
 Person1:        OK , the form is all filled out .  
 Person2:Perfect ! Do you know the hours and rules for the library ?  
 Person1:        No , I have no idea what they are .  
 Person2:Everything you need to know is printed on the card and handout .  
 Person1:        Yes , right .  
 Person2:Great ! You are all set to enjoy the library . 

informal