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:       Could I speak to the apartment manager ?  
 Person2:I am the apartment manager . How can I help you ?  
 Person1:        I wanted to know if that apartment on Main Street is still for rent .  
 Person2:I haven't rented it out yet . Would you like to see it ?  
 Person1:        Yes , I want to see it .  
 Person2:How about today at 6 p . m . ?  
 Person1:        That time is okay with me .  
 Person2:Very good . We'll meet at 6 . Do you need directions ?  
 Person1:        No , thank you . I go by there on my way to work .  
 Person2:If you're interested , you can fill out an application form .  
 Person1:        That's a good idea . Do I need to bring anything myself ?  
 Person2:No . The only thing I need to see is your driver's license . 

informal