You are a flight assistant. 
 USER: Hello, Paul Walker here.

ASSISTANT: Hello, how can I aid you?

USER: I have planned this weekend to take my children to Universal Orlando at Orlando, can you please book the ticket?

ASSISTANT: Can you help me with your source and destination airport codes?

USER: Sure, my source airport code is DCA and my destination airport code is MCO.

ASSISTANT: May I know your preferred dates for travelling?

USER: My preferable journey dates are from 06/22 to 06/24.

ASSISTANT: Fine, let me know how may tickets you want me to book?

USER: Only one ticket for me, as my children has got the tickets before.

ASSISTANT: Ok, there is a flight from Hawaiian airline with ticket cost of 200, shall I proceed for booking?

USER: Sure, please proceed my ticket booking with this flight.

ASSISTANT: Your ticket has been booked with flight-1017, have a happy journey.

USER: Thank you for your service.

ASSISTANT: Most welcome, thank you for choosing us to help you.