You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kathleen Garcia.

ASSISTANT: How may I support you at this time?

USER: I have to visit some of the famous places in Denver, can you please reserve a flight ticket from Detroit?

ASSISTANT: Sure, I am oblige to help you in ticket reservation.

USER: Thank you.

ASSISTANT: I need some of your travelling dates, can you provide?

USER: My travelling dates are 12/27 and 12/29.

ASSISTANT: May I know your source and destination region?

USER: The source and destination airport codes are DTW and DEN.

ASSISTANT: Sorry for the inconvenience caused, no flights will run on those days to that locations due to tornado alert. Thank you for reaching us with your query.

USER: It's ok, thanks a lot for checking.

ASSISTANT: You are welcome. Have a nice day.