Given the task definition and input, reply with output. 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'.

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