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 many people are traveling with you today , miss ?  
 Person2:Just me . I'm traveling alone .  
 Person1:        And how many bags do you have ?  
 Person2:Just one carry-on and one that I want to check .  
 Person1:        You must be going to some island to relax in the sun where all you need is a swim suit and a toothbrush .  
 Person2:That's right .  
 Person1:        Well , you have fun .  
 Person2:I will have fun . 

informal