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 am not sure what to do to get ready for my job interview .  
 Person2:Make sure that you understand the company . Do you understand what it is that they do ?  
 Person1:        No , I probably need to do some more research .  
 Person2:When you've finished your research it will help you figure out whether your company is rigid in philosophy or kind of more relaxed . Does that make sense ?  
 Person1:        I think that their attitude is rather casual .  
 Person2:So all of that information will help you to pick out what to wear . Do you have something to wear ?  
 Person1:        I have absolutely nothing so far .  
 Person2:You know I could go shopping with you sometime if you need it , but can we talk about other basics ?  
 Person1:        Yes , where should we go from here ?  
 Person2:Focus on being relaxed and open , don't forget to smile and shake hands and be genuinely interested in what their company is about . I'm sure you'll do well . 

formal