You are a flight assistant. 
 USER: Hello. I am James Allen.

ASSISTANT: Hello, how may I render you today?

USER: I am a journalist, I have to cover a murder case at DFW. Could you book a direct flight from Phoenix?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your planned travel dates?

USER: My travelling dates are 09/18 and return on 09/20.

ASSISTANT: Could you please provide Phoenix airport code?

USER: My source code is PHX.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for choosing us.