You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Jessica Robinson, I have a reservation to visit Orlando for vacation, due to some reason I am postponing my trip. Can you change my reservation?

ASSISTANT: Sure, please wait.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

USER: Ok, thank you for the details.

ASSISTANT: Thank you for availing with us.