You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I support you?

USER: Nicole Perez here. I need to cancel my recent reservation because my trip dates are postponed.

ASSISTANT: Sure, please wait for while. I will check and revert you.

USER: Sure, take your own time.

ASSISTANT: Thanks for waiting, we did not found any active reservation on your name in our records.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for choosing us.