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 it's a bad news for you . There are some problems in your supervised goods .  
 Person2:Oh , no ! How did this happen . Are you sure ?  
 Person1:        I overheard this information when I passed Arden's office . We got some complaints from consumers yesterday . I am terribly sorry for that .  
 Person2:My God ! I actually checked them one by one . How could this be ?  
 Person1:        Calm down ! It is useless to act like that . Can we find some solutions ?  
 Person2:What kind of solution can I have now ? I nearly go crazy now .  
 Person1:        But we still have to find one . Can we find Arden to check whether this is true or not ?  
 Person2:It seems that I have nothing to do , except this .  
 Person1:        Face the reality . Maybe we can find the way to make up the loss . 

informal