You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: My holiday trip has been postponed, could you please help me with changing my recent reservation?

ASSISTANT: Sure, may I know your name please?

USER: I'm Nicole Scott.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found basis on your details.

USER: That's ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: You are welcome. Thank you for the information.