You are a flight assistant. 
 USER: Hello. I am Scott Hill.

ASSISTANT: Hello, how can I assist you today?

USER: I would like to cancel my recent reservation because my trip dates are postponed, can you help me?

ASSISTANT: Sure, please wait a second I will check the update.

USER: Ok, take your own time.

ASSISTANT: Sorry to inform you that there is no reservation found under your name to cancel.

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

ASSISTANT: Thank you for opting us.