Hello.
Hello. How may I help you?
I am Debra Thompson. I want to change my existing reservation due to postpone my event. Could you please help me?
Sure Debra Thompson, I am here to help you for this. Let me check your reservation status in our database.
Sure.
Sorry for inconvenience, no reservation is found with your criteria.
No worries, thank you for  the information.
Thank you very much for contacting our agency.