Short Conversation 

Buy Shoes买鞋

Clerk：May I help you？

Kate：Yes.Do you have these shoes in size seven？

Clerk：I'm not sure .If you can't find them on the rack，they may be out of stock.But let me look in the stockroom.

Kate：Thanks.I'd like to try on a pair if you have them.

Clerk：I'll be right back.

（after a while...)

Clerk：I'm sorry，lady.I didn't find your size in this style in the stockroom.So would you like to try   something else?

Kate：No，thanks.