Student A:  Can you help me?
Student B:  Sure.  What can I do for you?
Student A:  Where's the fitting room?
Student B:  It's in the back of the store.
Student A:  Thank you.

Practice:

Student A:  Can you help me?
Student B:  Sure.  What can I do for you?
Student A:  Where's the _____________?
Student B:  It's in the ________________.
Student A:  Thank you.