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:       Will you be okay when you immigrate to America ?  
 Person2:Sure , I'm looking forward to it .  
 Person1:        What about your parents ?  
 Person2:I'll get used to not seeing my parents . 

informal