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'm having problems with my computer . 
 Person2:What's wrong with it ? 
 Person1:        For some reason it won't turn on . 
 Person2:Have you checked the connections on your computer ? 
 Person1:        What connections ? 
 Person2:There are cords that connect your computer to a power outlet . 
 Person1:        Will the cords keep it from turning on ? 
 Person2:It won't turn on if the cords aren't connected . 
 Person1:        I didn't think of that . 
 Person2:Try it and see if it works . 
 Person1:        I think that I will , thanks . 
 Person2:It should work , but let me know if it doesn't . 

informal