Hi, I am Robert Green.
Hello, How may I assist you today?
Owing an emergence, I want to change me existing reservation. Can you please help me with it?
Sure, I will check the reservation list, please wait.
Ok.
Thanks for your precious time, we are sorry to inform you that no reservation is existed previously to proceed further.
Ok, no issues. Thanks for the help.
Thanks for reaching us, Have a nice day.