Shopping for trousers

-          Can I help you?

-          Yes, I'm looking for a pair of trousers.

-          What size are you?

-          I'm a small.

-          How about this one?

-          Yes, that's nice. Can I try them on?

-          Certainly, there're the changing rooms over there.

-          Thank you.

-          How do they fit?

-          They’re too tight. Do you have a medium?

-          Yes, here you are.

-          Thank you. I'll take them.

-          OK, how would you like to pay?

-          Do you take credit cards?

-          Yes, we do. Visa, Master Card and American Express.

-          OK, here's my Visa.

-          Thank you. Here is your receipt. Have a nice day!

-          Thank you, goodbye.