You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please help me in reserving my flight from AUS to reach DCA?

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

USER: Sure, my travel dates are Oct 17th and 19th.

ASSISTANT: Do you need any preferred connections?

USER: I need a single connecting flight.

ASSISTANT: Are you looking for any preferred class?

USER: No.

ASSISTANT: Do you have any other specifications to be met?

USER: I would prefer normal cost airlines. Make sure that, my depart must be in the evening time.

ASSISTANT: Can I have your name to proceed?

USER: Myself Ashley Martinez.

ASSISTANT: Ok, please wait a moment.

USER: Ok, sure.

ASSISTANT: Thank you for your time, sorry no flights available on that route.

USER: Ok, no problem. Thanks for reaching us.

ASSISTANT: Thank you for availing us.