Hello. I am Eric Thomas.
Hello, how may I guide you?
I would like to change my recent reservation due to my planned programme got postponed by my  family members. Will you please help me?
Sure Eric, please wait for a moment to change your reservation.
Ok, take a time.
Sorry Thomas, there is no reservation found on your name to change your reservation.
Ok, its fine.
Thank you, for consulting us.
Thank you for your help.
Welcome.