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:       OK , Ann , you spent quite a bit of time in Australia recently so why don't you talk about that ?  
 Person2:I really liked living in Australia . I was an international student and I studied education at the university of Sydney . And living in Sydney was fantasticbecuase I could go to the beach anytime I wanted and there was a great nightlife in Sydney . There are lots of great clubs . And people were very , very friendly and easy-going and I met a lot of international people in living Sydney .  
 Person1:        Mm-hm . How long were you there ?  
 Person2:I was there for almost a year .  
 Person1:        Oh , OK .  
 Person2:And I travelled a little bit in Australia . I went up the east coast . Up to Frasier Island . Which is a world heritage site . And I saw dingo running along the beach and sharks in the water . We climbed cliffs and went through a rain forest and went camping and then we went up to the ... , which is a but north . And the further north you go in Australia , the hotter it gets . So we were able to go swimming in the ocean and I went diving for the first time but it was a little bit risky cause I didn't have a diving license , so I went on an introductory dive and I saw a giant clam that had a really purple spongy inside that I was able to touch and then the clam closed up really quickly .  
 Person1:        So , did you , did you lose your finger ?  
 Person2:Almost .  
 Person1:        Almost . Ah , you're lucky . Um , it's funny , you go in the water and you worry about sharks , but not clams .  
 Person2:Exactly .  
 Person1:        Will you be going back to Australia soon ?  
 Person2:I'd like to go and live there for at least another year . Probably I'll go back to Sydney or maybe I'll go down to Melbourne because it's a really interesting cultural city . They have lot of museums and parks . 

formal