You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I want a direct flight from Orlando to Phoenix.

ASSISTANT: Sure, can you please share your travel dates?

USER: My journey dates are 09/11 and 09/13.

ASSISTANT: Could you please help me with airport codes?

USER: My airport codes are MCO and PHX.

ASSISTANT: May I know your name to proceed further?

USER: Donald Roberts here.

ASSISTANT: Donald, there is no flight available at your requested dates.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for contacting us.