You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Rebecca Hall.

ASSISTANT: How can I aid you?

USER: I am willing to book a flight ticket from IAD - DCA. Can you please help me to book a flight ticket?

ASSISTANT: Sure, please help me with your travel dates.

USER: My travel dates are 08/05 and 08/07.

ASSISTANT: The flight 1000 of UA airlines is available on your requested dates with a price of 200 and with 1 connection. Shall I proceed?

USER: Yes, please proceed with my booking.

ASSISTANT: Hall, your reservation has been done successfully.

USER: Thank you for booking my flight ticket.

ASSISTANT: You are welcome.