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: Do you like singing ?
Person2:Yes , I do .
Person1: Let's go to a ETV tonight .
Person2:But I can't sing it well .
Person1: It doesn't matter . No one will laugh at you .
Person2:OK , I'Il go with you . When shall we go ?
Person1: What about six ?
Person2:It's too early . Let's make it seven , OK ?
Person1: OK . Let's make it .
Output:
informal