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:       It's going to strike 12 o'clock . Let's get the firecrackers ready , Rose .  
 Person2:Aren't firecrackers forbidden in the city ?  
 Person1:        Well yes , but they are not allowed only in downtown areas . It's OK here . It would be difficult to ban customs that have thousands of years of tradition . The habit does bring kids joy and excitement so long as precautions are taken . Let's go out and set off firecrackers out there .  
 Person2:Fantastic ! The whole city is echoing with crackling sounds !  
 Person1:        What other activities will you have tomorrow ?  
 Person2:Quite a lot . The celebration of the New Year has just started . The first day we southerners have sweet rice cakes for breakfast , and people in the North have Jiaozi . Afterward , we will make New Year calls on family relatives , husband's side on the first day and wife's side on the second .  
 Person1:        Do you bring some gifts along ?  
 Person2:That's for sure . Fruit , cream cakes , medical tonics are often for parents and aged relatives , and cash enclosed in a red envelope for the kids . All this , of course , should be well prepared beforehand .  
 Person1:        Is it the same practice for all families ?  
 Person2:Not all the same nowadays I must say . Many families , especially those of newly married couples , choose to make an overseas trip to escape the routines . Rose and I had a tour to Singapore , Malaysia , Thailand and Hong Kong last year . We stayed there for two weeks until the last day of the holiday .  
 Person1:        I really appreciate the way you Chinese people exchange feelings . The holiday's long enough for you to relax .  
 Person2:Well , for city dwellers , the Spring Festival is a holiday of seven days . While in the country where traditions are still heavily emphasized , the festival lasts ten days . 

informal