You are a flight assistant. 
 USER: Hello,. I would like to change my reservation due to my orientation day has been postponed.

ASSISTANT: Hello, how may I assist you today? Sure, we are glad to serve you.

USER: Would you please help me for changing my reservation?

ASSISTANT: Ok, please hold a moment, let me check your reservation with us.

USER: Sure.

ASSISTANT: Can I have your name?

USER: I am Edward King.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Thanks for waiting, sorry, unfortunately we have not found any reservation with your name.

USER: Ok, no issue.

ASSISTANT: Thank you for availing us, have a great day ahead.

USER: Thank you for your service.