You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Please reserve a seat to Dallas by the name Anthony King.

ASSISTANT: Sure, provide me your airport codes?

USER: My airport codes are from AUS to DFW.

ASSISTANT: May I know your travel dates?

USER: My travelling dates are from 09/12 to 09/14. I need a direct flight to Dallas.

ASSISTANT: Ok, plesae wait.

USER: Sure.

ASSISTANT:  Sorry, no direct flights are available on your travel dates.

USER: Ok, No issues. Thank you.

ASSISTANT:  Thank you for availing us.