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's wrong , Jerry ? You look so upset .  
 Person2:To be honest , I was just dumped .  
 Person1:        Oh , I'm sorry to hear that . You can go on a holiday cheer you up .  
 Person2:No , thanks . I'm not in the mood for traveling .  
 Person1:        Come on . A trip will do you good . Are you doing anything this weekend ?  
 Person2:I was planning on doing a lot of wallowing .  
 Person1:        Well , my friends and I are planning on going to Shangri-La on Saturday . Do you want to come with us ?  
 Person2:Where is that ?  
 Person1:        Not very far from here . We'll fly . It's about one and a half hours .  
 Person2:What's there to see ?  
 Person1:        There is a large canyon , vast grasslands , ancient forests and mountain lakes .  
 Person2:Oh , sounds nice .  
 Person1:        Yes , the scenery there is breathtaking . I have some pictures at home . You can come over and take a look if you like  
 Person2:Ok . Then I can make up my mind . 

informal