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:       You seem depressed these days . What's the matter ?  
 Person2:I went bankrupt and I'm flat broke now .  
 Person1:        If I can do anything for you , don't hesitate to let me know .  
 Person2:Thank you . 

informal