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:       Good morning . Is this where I can get a library card issued to me ?  
 Person2:No problem , we have a short form right here ; just hand it to me when you are done .  
 Person1:        I'm done .  
 Person2:That looks great , but I will also need your driver's license or other form of I . D .  
 Person1:        Sure , here it is .  
 Person2:Well , this looks nice . Do you know how to use it ?  
 Person1:        I am pretty sure how to use it , but can you remind me ?  
 Person2:Of course , just remember that all of the needed information is on the card .  
 Person1:        I see .  
 Person2:Well , I hope you have a wonderful time on your library visits ! 

informal