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

ASSISTANT: Hello, how can I best assist you?

USER: I planning to visit Lady Bird Lake at Austin, could you please help me with booking a flight ticket?

ASSISTANT: Sure, Can you please share your journey points?

USER: My nearest source airport code is OAK and destination airport code is AUS.

ASSISTANT: May I know your planned journey dates?

USER: I would like to take off on 05/21 and return on 05/23.

ASSISTANT: Do you have any requirements?

USER: Make sure that the connection limit should be 1.

ASSISTANT: Thanks for providing your details. We found a flight with a fare of 100 and with Southwest airline. Shall I book this ticket?

USER: Please proceed with the booking if the connection limit is 1.

ASSISTANT: Your ticket has been booked with flight number 1019. Thank you for contacting us.

USER: Thank you for the help.

ASSISTANT: Have a happy journey.