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 hear that you've been to the Saikei Ski Resort for the weekend . Did you enjoy it ?  
 Person2:Yes , it's so exciting , though I had the most falls in our skiing team .  
 Person1:        Isn't there any coach to teach you how to ski ?  
 Person2:Of course there is . The top-level coaches there are from the State Sports General Administration .  
 Person1:        Could you move smoothly ?  
 Person2:Yes.My face even ached in the icy wind .  
 Person1:        What happened afterwards ?  
 Person2:I was skiing on and on excitedly until I realized one thing-I could not stop ! You can just imagine how terrified I was .  
 Person1:        Poor girl ! 

informal