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:       Wow . She can be really nasty , can't she ?  
 Person2:No . She was right . I was too nervous . I kept thinking , What if we blow it ?  
 Person1:        Well , I guess Zina figured you couldn't blow it if you were in the hotel room .  
 Person2:She even stayed at a different hotel . She said I might be contagious .  
 Person1:        Well , at least we have Stars.com . That'll be great publicity . 

formal