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 decided to go for this kind of life . 
 Person2:Try to keep cool . It's not an easy take . 
 Person1:        I know . I always hope for the best and prepare for the worst . 
 Person2:Then you will be in line for a doom . 

informal