Hello.
Hello, how may I assist you today?
I have to change my reservation due to my planned event got postponed. So please help me with that.
Sure, may I know your name for the change process?
Thank you. Please check the  reservation with my name Donna Baker.
Thank you, please wait for a moment.
Sure, take your time.
Sorry, as per your concern I can not amend your reservation, as your reservation is not found as per our records.
Oh! It may not be booked properly. Anyway, thank you for your time.
Welcome, thank you for reaching us.