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'.

[Q]: Person1: What can I do for you , Ma'am ?
Person2:I want to buy a cell phone for my daughter .
Person1: How old is she ?
Person2:She is 17 . It's for her birthday .
Person1: We have a new-fashioned cell phone especially designed for young girls . The brand name is Nokia .
Person2:Thanks , but I want to have a look at the Motorola's products .
Person1: Sure . This is the one I will not hesitate to recommend . Its color and style is so attractive and also the quality is really reliable .
Person2:Sounds perfect . I'll take the pink one . Can you pack it for me ?
Person1: Sure . By the way , here are some free adornments . Would you like one ?
Person2:Why not ? The Sweetheart pendant matches the cell phone well . I'd take this one .
Person1: Have a seat over there . I'll pack it up for you right away .
Person2:Thanks .
[A]: informal

[Q]: Person1: Can you imagine a boat letting in the river ?
Person2:That would be terrible .
Person1: Sure thing . I have an experience like that .
Person2:Oh , how were you saved finally ?
Person1: I was in such a panic at that time . Fortunately another boat came along and I was saved from drowning .
[A]: informal

[Q]: Person1: I wish I could unsay the sharp words to him . He must hate me very much .
Person2:He doesn't mind . As a matter of fact , he's very pleased .
Person1: Really ? Oh , thank Goodness !
[A]:
informal