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:       It may comfort you to know that many people attended his viewing .  
 Person2:How did they hear ? No one called .  
 Person1:        In times of loss , it is often hard to pick up the phone . But his whole family was here .  
 Person2:His mom and dad must be destroyed . He was their only son .  
 Person1:        And he was so young , with so much life to look forward to .  
 Person2:Yes ... thank you for understanding . We have to go now .  
 Person1:        This sheet tells the visiting hours and funeral time and location . 

formal