Q: 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:       Amy , could you help me with this work ? 
 Person2:Sorry , I'm busy . Why don't you ask Alice ? 
 Person1:        Okay . 
A:
informal