You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you now?

USER: Edward Hernandez, here. My plan to visit my parents got postponed, So I want to postpone my recent reservation. Could you help me in changing my recent reservation.

ASSISTANT: Sure, please wait  a minute I will check and let you know.

USER: Ok.

ASSISTANT: Thank you for your time, no reservation found with your name.

USER: Ok, no issues. Thanks for your information.

ASSISTANT: Thank you for availing us.