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:       What is the highest goal of your company ?  
 Person2:The supreme goal of ours is to be in the leadership in marketing .  
 Person1:        Well , it is a really high target .  
 Person2:Yes . We can make great efforts to make it become true as long as we have a clear goal . 

informal