Hi.
Hello. How may I help you at the moment?
I made a reservation earlier in this week to give a seminar, but my seminar has been postponed. Can you please help me in changing the reservation?
Sure,I will help you with that.
Thank you.
May I know your good name please?
I am Catherine Johnson.
 Catherine Johnson, sorry to inform you that no reservation found by your name on our database.
Ok, no issues. Thank you for your quick response.
Thank you for choosing us.