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:       May I ask whether we are allowed to wear casual clothes in the office ? 
 Person2:Sure , company rules are not very strict at this point . 
 Person1:        Thank you for telling me that . 
 Person2:But remind you , there are some forbidden activities . 
 Person1:        What are they ? I ’ ll be careful . 
 Person2:Don ’ t use office phones for personal matters . 
 Person1:        I got it . 
 Person2:Never ever come to work drunk , also smoking in the office is not allowed . 
 Person1:        I see . 

formal