You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your name please?

USER: There is event in white house, so I got a invitation to attend the meeting. So I want to book a ticket from DEN to DCA.

ASSISTANT: Sure, please tell me your travelling dates?

USER:  I am planning to travel on 06/14 to 06/16.

ASSISTANT: Can I know your name please?

USER: My name is Brian Phillips.

ASSISTANT: Ok, there is a flight available with 1 connection and the price is 100.

USER: Proceed for booking.

ASSISTANT: Sure.

USER: Thanks for booking. Great service.

ASSISTANT: Your ticket has been booked successfully with AA airlines and the flight is 1018. Thank you and have a nice day.

USER: Thanks you.