You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I want to visit my uncle home in New York, can you book a ticket for me?

ASSISTANT: Sure, can I know your preferred travel dates?

USER: My journey dates are 12/29 and 12/31.

ASSISTANT: Please help me with your airport codes.

USER: I want to fly from DCA to LGA.

ASSISTANT: Give me a moment, I will check the availability of flights.

USER: Ok.

ASSISTANT: Flight-1021 from Southwest airline is available on those dates, ticket fare is 100 only. Shall I proceed booking?

USER: Yes, please.

ASSISTANT: May I know on which name I have to book the ticket?

USER: I am Dorothy Roberts.

ASSISTANT: Your ticket has been booked, have a safe journey.

USER: Thank you for booking.

ASSISTANT: Thanks a lot for choosing us to help you.