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: Can we have two tickets for the 7:30 showing of ' Beautiful Mind ' .
Person2:Sorry , we have sold out the tickets .
Person1: What's on tomorrow at that time ?
Person2:' Beautiful Mind ' will be playing again . And there's also ' Titanic ' .
Person1: Terrific , that's a wonderful movie , I like it very much . Can I get tickets now for tomorrow ?
Person2:Yes , 20 yuan for each .
Person1: Two tickets , please .
Person2:OK . Here you are .
A:
formal