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 afraid I can't complete my paper on time .  
 Person2:What happened ?  
 Person1:        I keep on meeting with difficulties in the experiment . I can hardly go on .  
 Person2:Where there are difficulties , there are ways to get over them . Hold on ! 

informal