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:       How are you ?  
 Person2:I'm fine thanks . How about you ?  
 Person1:        I'm okay . What are you doing these days ?  
 Person2:Not a lot , actually . Busy at work of course - we've got a big project coming up in Malaysia . I may have to go to KL in a few weeks .  
 Person1:        That's great . When are you starting ?  
 Person2:Probably in a week or two . I'll let you know . 

formal