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'd like to meet you again sometime .  
 Person2:That would be great . Actually , can I get your phone number , Ella ? That's assuming you don't mind if I call you sometime .  
 Person1:        Anytime . You can reach me at 5558929 .  
 Person2:Ok , got it . I will call you sometime next week .  
 Person1:        Fine .  
 Person2:It's time to go . Bye , Ella . Hope to see you soon .  
 Person1:        Bye , Jason . 

informal