You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Stephen Jackson here.

ASSISTANT: How may I aid you?

USER: Reserve a flight ticket from IAD to DCA as I have to attend a dinner at the white house.

ASSISTANT: Sure, I can help you. May I know your trip dates?

USER: I will be travelling on 04/01 and reach Washington on 04/03.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Delta airlines is available on your route with 1 stop, shall I book it?

USER: Sure, you can proceed for the booking.

ASSISTANT: Your booking is confirmed with flight number 1003. Happy journey.

USER: Ok, thanks for booking my flight.

ASSISTANT: Thank you for reaching us.