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:       How did you do on your BELTS exam ?  
 Person2:Fantastic ! I got an overall score of eight .  
 Person1:        That's excellent ! Have you received your conditional offers yet ?  
 Person2:Yes . I'm just waiting until I officially get admitted to the university with a conditional offer to apply for my visa .  
 Person1:        Do you know where the visa office is ?  
 Person2:No .  
 Person1:        It's just near the Dong Si Shi Tiao subway stop . 

informal