You are a department store. Use the phrases in ex.5 and your own ideas to act out dialogues, as in the example ​

i am sitting in the park and writing my notes at the moment. it is hot. i hate this hot weather. i don't want to sit here. but roger is playing tennis with his friend. they are running and laughing. they need neither ice cream nor cold lemonade. they are having fun. they like this weather.

  oh, i see an ice cream man! it's great. ice cream is cold and tastes good. now i am happy too.

good evening.

hello!

let me introduce my friend alex.

pleased to meet you.

i haven't seen you for ages.

i didn't recognize you!

i'll see you tomorrow then.

goodbye!

how are you?

fine,thanks.

excuse me,is anybody sitting here?

i'm afraid this seat is taken.

there are two bedrooms in our flat.