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 was your education going on in Australia ?  
 Person2:I'm going to graduate this summer .  
 Person1:        Where are you going to work then , in Australia or back in China ?  
 Person2:I'm planning to return to China after graduation .  
 Person1:        Why are you choosing to leave a foreign country ? Many people are reluctant to leave the superior living environment abroad .  
 Person2:Well , I think personal development is much more important than simply having a superior living environment .  
 Person1:        Yeah , China's developing so fast and development opportunities can be found almost in every corner of the country . 

formal