You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in booking a flight ticket from PHX to AUS?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I would like to fly on May 19 and return on May 21.

ASSISTANT: May I know your name please?

USER: Myself Helen Harris.

ASSISTANT: Do you have any preferences?

USER: I need a direct airline.

ASSISTANT: We found a direct flight in an airline Southwest with 1007 number price of 100.

USER: You can proceed to booking.

ASSISTANT: Shall I reserve it?

USER: Ok.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.