You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Brenda Lopez, I want to book a ticket from AUS to DFW.

ASSISTANT: May I know your travel dates?

USER: Can you make a reservation on direct flight?

ASSISTANT: Ok.

USER: Travel dates are on 01/01 and 01/03.

ASSISTANT: Provide me your source point?

USER: Source point is Austin, AUS.

ASSISTANT: Do you have any preference?

USER: My price limit is 5000.

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

USER: Ok, thank you.

ASSISTANT: Thank you for availing us.