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:       Excuse me , Supen . 
 Person2:I hope nothing is wrong . 
 Person1:        Please forgive me , but I have to leave . I feel terrible . but ... 
 Person2:What's the matter ? 
 Person1:        My daughter isn't feeling well . 
 Person2:Oh , no . Is it serious ? 
 Person1:        I don't know . Will you forgive me ? 
 Person2:Of course . I'm sorry for your daughter . 
 Person1:        Thank you . It's our first date . I hope it's not too offensive . 
 Person2:Not at all . 

formal