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:       I need help in ordering my office supplies .  
 Person2:You can print out a copy of the Order Supply Form from our company web site and turn in into me . What will you be needing ?  
 Person1:        I need ink cartridges , staples , and Post-its .  
 Person2:Will you need all of them right away or can some wait ?  
 Person1:        Some of these can wait but there are a few things that I need right away .  
 Person2:You can only buy supplies that you have a budget for . Do you know what your budget is ?  
 Person1:        We have plenty of money for office supplies .  
 Person2:You can pick these supplies up or they can be delivered to your building . Which would you prefer ?  
 Person1:        I want to pick them up .  
 Person2:Well , just finish the request and we will contact you when the supplies come in . Have a good day !  
 Person1:        You too ! 

informal