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 Lucy from ABC Company .  
 Person2:Hello , Lucy .  
 Person1:        I'm calling to see if you have made your decision . You are the right person we are seeking for .  
 Person2:Yes , I have decided to work with your company .  
 Person1:        Good news for us . When can you start to work ?  
 Person2:It's my honor to be one member of your company . I'd like to begin to work any time as you like .  
 Person1:        Ok , please come to my office at 9 AM next Monday . I will introduce you to our boss .  
 Person2:No problem . Thank you for calling me .  
 Person1:        You ’ re welcome . 

informal