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: Are you there , Mary ?
Person2:I'm back . My bid on the Buddha is still the highest !
Person1: How much is my stamp ?
Person2:Don't you want to hear more about my statue ?
Person1: Don't get ahead of yourself . Fat boy isn't yours yet .
Person2:His name is not fat boy ! You can be so rude sometimes .
A:
informal