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 may I help you ?  
 Person2:I want to get a passport .  
 Person1:        You need to apply for a passport .  
 Person2:When can I apply for it ?  
 Person1:        You can apply right now .  
 Person2:I ’ d like to do that .  
 Person1:        Fill this out , please .  
 Person2:What ’ s next ?  
 Person1:        I will need to take your passport picture .  
 Person2:When will my passport be ready ?  
 Person1:        It will take about three weeks .  
 Person2:That ’ s great . Thank you . 

informal