You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself David Campbell.

ASSISTANT: David, what kind of assistance you are looking for?

USER: I need to schedule my trip to Francisco for attending a business meeting. Can you please help me in booking the ticket from AUS to SFO?

ASSISTANT: Sure, I can help you. May I know your itinerary dates?

USER: I am willing to travel on 10/19 and again I will be return back on 10/21.

ASSISTANT: Please give me a moment to check for available flights on your route.

USER: Sure, I will wait for your response.

ASSISTANT: We found a connecting flight from Southwest airlines and ticket costs you 200.

USER: Yes, I think that can work for me.

ASSISTANT: Your ticket is confirmed in flight 1009, have a safe and happy journey.

USER: Thank you very much for booking the ticket.

ASSISTANT: Thank you for approaching us.