You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I be your helping hand today?

USER: Can you aid me in booking a flight ticket from OAK to AUS?

ASSISTANT: Sure, do you need any lay by in between the journey?

USER: Ensure it is a direct flight.

ASSISTANT: Ok, can you please share your travelling dates?

USER: Sure, I would like to go on Mar 03rd and return back on Mar 05th.

ASSISTANT: Ok, may I know your good name please?

USER: Myself Brenda Mitchell.

ASSISTANT: Ok, do you have any airline preference?

USER: No, I don't have any airline preference.

ASSISTANT: At what time would you like to travel?

USER: I don't have any other requirements.

ASSISTANT: There are no flights available  with your required specifications.

USER: That's ok, thank you for checking the availability.

ASSISTANT: Thank you for reaching us.

USER: Welcome.