Hello.
Hello, how may I oblige 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 good name?
Thank you. Please check the reservation with my name Kathleen Walker.
Ok, please wait for a minute.
Sure, take  your time.
Thanks for waiting, there is no active reservation found on your name.
Oh! It  may not be booked  properly due to server issues while  booking. Anyway, thank you for  your time.
Thank you for choosing us.