You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

USER: Can you help me in doing a reservation from DCA to AUS?

ASSISTANT: Sure, may I know your travel dates please?

USER: My trip dates are Nov 12 to 14.

ASSISTANT: Do you have any requirements?

USER: I need normal-cost airline.

ASSISTANT: Can you mention your name to proceed further?

USER: I am Kenneth Lee.

ASSISTANT: Sorry, no flights found as per your requirement.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for contacting us.