You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am Saran Evans. I am looking for a flight from Denver, can you help me out?

ASSISTANT: Sure Sarah, I will help you with that. Can I have your travel dates please?

USER: Sure, my airborne will be on Jan 22nd and deplane would be on Jan 24th.

ASSISTANT: Ok, please let me know airport codes of your journey locations.

USER: My origin airport code is DEN and destination airport code is ATL.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry Saran Evans, no flight is available to you on your dates due to some climatic conditions.

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for choosing us, have a good day.