You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I would like to visit my friends house in Washington. Can you help me in booking a ticket?

ASSISTANT: Sure, may I know your complete journey details please?

USER: I am planning to travel from LGA on 03/06.

ASSISTANT: Ok, may I know your source code and travel dates please?

USER: My destination airport code is DCA and would like to return on 03/08.

ASSISTANT: Ok, hold on for a moment please?

USER: Sure.

ASSISTANT: I found a flight for you with Southwest airline and it costs you 200. Shall I proceed?

USER: Please book the ticket.

ASSISTANT: May I know your good name please?

USER: My name is Gary Garcia.

ASSISTANT: Your ticket has been booked with 1027 flight number.

USER: Thank you for helping me.