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:       Where did you get assigned to go this time around ? 
 Person2:They asked me to go to Paris to check on the new office that was just established there . And you ? 
 Person1:        Hong Kong again . I would like to go somewhere different for a change . 
 Person2:Teach me Cantonese and I'll pull some strings to get a trade with you next time around . 
 Person1:        If you really want to learn , remind me when you get back from your business trip . 
 Person2:You're on . 
 Person1:        When do you leave ? 
 Person2:I'm scheduled to fly out on the tenth . 

informal