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:       Hi , good to see you . What can we assist you with today ? Going away on business again ? 
 Person2:Yes , I'm off again at the beginning of next week . I need to get some Traveller's Cheques . 
 Person1:        We do always recommend people take Traveller's Cheques when travelling overseas . The world is a dangerous place nowadays , you never know . 
 Person2:Sure . At least if I do get robbed , heaven forbid , I can get my money back using the traveller's cheques insurance . Once , when I was travelling in France , I was pick-pocketed and not only did you replace my Traveller's Cheques for free , you also did it extremely quickly and easily . 

formal