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: Hi , Lander . What's wrong ?
Person2:I can hardly make ends meet these days .
Person1: Same here . I have't brought any new clothes for three months .
Person2:My income remains the same but prices just continue to rise .
Person1: True . The news says that there is a general increase in the price of daily necessities .
Person2:Definitely . I have to spend 300 yuan more on food every month .
Output:
formal