Detailed Instructions: 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'.
Q: Person1: You must be Wily . It's nice to meet you .
Person2:Nice to meet you , Mr . Wilson .
Person1: Tim , please . Please be seated .
Person2:Thank you .
Person1: So , Wily , you have been with IBM for two years ready for change ?
Person2:Well , I think I'm ready for new challenges .
A:
informal