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:       Hello , this is Francis from XYZ Company . I would like to discuss with you about a new project some time next week . Do you have time to meet ?  
 Person2:Well , I am not sure . Lets me check my agenda  
 Person1:        Ok .  
 Person2:I am free on Tuesday afternoon from 2 PM to 4 PM , is it convenient for you ?  
 Person1:        It is ok with me . So I will be arriving at your office around two fifteen PM .  
 Person2:Yes , there is . See you then . 

informal