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 wanna register for this mathematics course .  
 Person2:I ’ m sorry registration has closed .  
 Person1:        Closed ? The clerk told me I could come back and register any time during the first week of classes .  
 Person2:Well , that ’ s not possible . The computer ’ s official student account has already been sent to the state . And that ’ s what our budget is based on . Who told you that anyway ?  
 Person1:        Some woman in here when I tried to register three weeks ago . She said I just had to pay a late fee .  
 Person2:She must have been a part-time worker . They didn ’ t have much training . Why didn ’ t you register then ?  
 Person1:        She said I couldn ’ t until I had my birth certificate . Here it is .  
 Person2:Huh , that is no reason to demand a birth certificate . We only need to establish residency , you know , a phone bill with your name and address on it would have been fine .  
 Person1:        Serious ? Only the proof of my address .  
 Person2:Yes , I am afraid she gave you the wrong information .  
 Person1:        But it ’ s unfair .  
 Person2:Well , I sympathize with your problem , but , to be honest , I don ’ t think there is any thing anyone can do for you . You were trapped in the system.If you want , you can talk to the director . She will help you if she can .  
 Person1:        Great .  
 Person2:Don ’ t get your hopes up . 

informal