These free English dialogues give examples of English that you can use in real life situations. However, it is unlikely your English will improve much just by reading. Print them out and practice them with friends and fellow students. Change the situations to match the ones you meet in your life. Have fun.
Yes, I'm looking for a pair of trousers.
What colour would you like?
I'm not sure. Can you measure me?
[measures customer] You're a 34 inch waist. How about these?
What material are they?
Do you have anything in cotton?
Of course. The fitting room's over there.
[tries trousers] They're a little long. Do you have anything shorter?
You want to buy some new shoes. Write a conversation and practice with friends.