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 , Jenny . You look like you are in a hurry to somewhere . Where are you going ?  
 Person2:I am going to the bank . I need to cash some checks .  
 Person1:        That's great . We can go to the bank together .  
 Person2:Why are you going there ?  
 Person1:        I will go to Japan on business for 5 days next Tuesday . I want to exchange some Japanese yen .  
 Person2:I see . Will you bring a lot of money with you ?  
 Person1:        Not really . I plan to bring some cash and withdraw money at the ATM in Japan .  
 Person2:Do you have the bank card in Japan ?  
 Person1:        Nope . You can use the credit card to withdraw the money in foreign countries .  
 Person2:That sounds really convenient . Do you pay extra money to enjoy this service ?  
 Person1:        No . It is free of charge .  
 Person2:Great ! I will apply for a credit card when I go to the bank later .  
 Person1:        I think we are running out of time . The bank is going to close soon . 

informal