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:       What may I do for you ?  
 Person2:I need to get a passport .  
 Person1:        You will need to apply for one .  
 Person2:When will I be able to do that ?  
 Person1:        You can do it right now , if you ’ d like .  
 Person2:That ’ s fine .  
 Person1:        Please fill out this application .  
 Person2:Then what do I do ?  
 Person1:        I just need to take your picture .  
 Person2:How long will it take for my passport to be ready ?  
 Person1:        You will get it in a few weeks .  
 Person2:That ’ s perfect . 

informal