Hello.
user
Hello. In what way can I aid you today?
assistant
I need to change my reservation due to my planned event got postponed. So please help me with that.
user
Sure, can I know your good name?
assistant
Thank you.  Myself Raymond Walker.
user
Thank you for sharing your good name, but there is no active reservation found with thew given name. Thank you for choosing for service.
assistant
Oh! It may not be booked properly due to server issues while booking. Anyway, thank you for your time.
user