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: I just got a telegram from Margaret and Greg .
Person2:Are they coming to Chicago again ?
Person1: Yes . They ' re coming the beginning of August .
Person2:Oh , good ! We can all get together again .
Person1: I ' m glad they ' re coming in August . Maybe Greg and I can play some golf or get tickets to a baseball game .
Person2:And Margaret and I can take the dog and go jogging in the park .
Person1: Remember the garden party they gave when we were in England ?
Person2:Oh , yes . We all sat on the grass , and Margaret played the guitar and sang Greek songs .
Person1: I had a great time . It ' ll be good to see them again .
informal