Given the task definition and input, reply with output. 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'.

Person1: Is English acceptable for you ?
Person2:Yes .
Person1: What's your name ?
Person2:Jenny Madison .
Person1: What ' s your nationality ?
Person2:Nigerian .
Person1: What is your date of birth ?
Person2:15th of April , 1969 .
Person1: And your occupation ?
Person2:I am a painter .
Person1: What's your passport No . ?
Person2:7834623464 3367 .
Person1: Where do you live in China ?
Person2:In the Golden Mountain Hotel in Beijing .
Person1: You are suspected of smuggling . Do you understand your rights ?
Person2:Yes .
Person1: Ok , sign here .
formal