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:       Good morning , Mr . Huang . It's a pleasure to meet you again .  
 Person2:Pleased to see you . Welcome to our company . I hope you have a good day .  
 Person1:        Thank you . Can I meet my colleagues ?  
 Person2:Sure , come with me . Hello , Michael , this is Steven . He will be part of your team .  
 Person1:        Hi , Steven , welcome to join us !  
 Person2:I ’ Ve been looking forward to meeting you . I am new to the working world and would appreciate your guidance .  
 Person1:        That ’ s right . Just call me if you need anything .  
 Person2:That's great .  
 Person1:        Well , as the other guys are still not in , I ’ ll introduce you to them later .  
 Person2:All right . 

informal