You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you now?

USER: My Adventure trip got postponed, Can you please change my existing reservation?

ASSISTANT: Sure, I can help you and may I know your previous flight ticket booking name?

USER: Sure, I am Ruth Jackson.

ASSISTANT: Please allow me a moment.

USER: Sure.

ASSISTANT: Sorry, there is a no reservation found for the user name in our data base to change it.

USER: Ok, Thank you.

ASSISTANT: You are most welcome and thank you for reaching us.