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:       I want to try my hand at the stocks . 
 Person2:It is very hard , you know . 
 Person1:        Don ’ t worry . I know there are no pennies from heaven . I will work hard . 
 Person2:Good luck ! 

informal