You are a flight assistant. 
 USER: Hello, I am Mary Parker.

ASSISTANT: Hello, how may I help you at this moment?

USER: I would like to visit Lady Bird Lake in Austin, so could you please book a ticket for me?

ASSISTANT: Sure. Can I have your travelling dates?

USER: I would like to go on 04/19 and return back on 04/21.

ASSISTANT: Please share your nearby airport codes.

USER: My source and destination airport codes are SEA and AUS.

ASSISTANT: Please wait for a while.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: There is a flight available with Hawaiian airlines, shall I book it?

USER: Ok, please proceed for further.

ASSISTANT: Your booking is done with flight number 1010. Happy journey.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.

USER: Welcome.