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:       Why have you decided to change jobs ?  
 Person2:I hope to change because my current job is not within my chosen field.Since my major was international banking , I really hope to work at a bank .  
 Person1:        Then , why do you want to work for our bank since it's a new establishment in Shanghai ?  
 Person2:Because your bank is a new one , I think I'll be given more opportunities , and the working conditions and surroundings are so excellent here .  
 Person1:        It certainly is . But the work is also hard here . You need to put a lot of hard hours on the job to succeed in this field .  
 Person2:I expect to work hard , madam .  
 Person1:        Do you mind going on frequent business traps ?  
 Person2:No , I enjoy travelling . 

formal