You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what can I do for you?

USER: Please assist me in booking a direct flight to Washington.

ASSISTANT: Sure, may I know your boarding point?

USER: My boarding point is ORD.

ASSISTANT: When are you planning you trip to Washington?

USER: I am planning my trip on Nov 30th and return on Dec 2nd.

ASSISTANT: Which airport of Washington would you like to choose for landing?

USER: I choose DCA airport for landing.

ASSISTANT: Ok, may I know which airline do you prefer to travel?

USER: I do not have any preferences.

ASSISTANT: Ok, please share if you want to add any other preference to your journey.

USER: No.

ASSISTANT: Ok, please stay connected for a moment.

USER: Ok.

ASSISTANT: We have a direct flight for your route which departs at 2:00 AM and returns at 9:00 AM. Would you like to proceed?

USER: Yes, please proceed.

ASSISTANT: May I know your name please?

USER: I am Linda Evans.

ASSISTANT: Your ticket is confirmed in Southwest airlines flight, number 1021 and the fare is 100.

USER: Thank you.

ASSISTANT: Thank you for opting us.