You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Daniel Scott.

ASSISTANT: How can I assist you?

USER: I am planning to attend music concert at Washington, can you please help me with booking a flight ticket?

ASSISTANT: Sure Scott, can I know the travel dates please?

USER: Sure, I would like to take off on 08/18 and return back on 08/20.

ASSISTANT: Could you provide the airport codes please?

USER: My source airport code is MCO and the destination airport code is DCA.

ASSISTANT: Ok, wait a moment please.

USER: Ok, please make sure that the price limit does not exceed 200.

ASSISTANT: There is a flight in Delta airline with price 100, can I book it?

USER: Yes, please proceed with the booking.

ASSISTANT: Your ticket has been booked with flight number 1008.

USER: Thank you for your help.

ASSISTANT: You are welcome.