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:       Hello . What can we do for you today ?  
 Person2:I've just had some money sent from Germany , in Euros .  
 Person1:        OK , could you give me your details and I'll see if it has cleared . We need your banking details and some ID . A passport or something like that ?  
 Person2:I have my passport right here , and here are the account details . The name , number ...  
 Person1:        Mr Jurgen , yes , the remittance has been successful .  
 Person2:That was quick ! I didn't expect it to come through so quickly . Yes , that is good news . The full amount should be 20,000 Euros , is that right ? I'd like to withdraw 5,000 Euros worth of local currency , if that's possible .  
 Person1:        Not a problem , Sir . Please fill in this exchange form and show me your passport . 

formal