You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Gregory Adams, I have meting with my company client at New York. Help me find a flight from DCA to JFK. Please make sure I need a direct flight.

ASSISTANT: Ok, may I know your travelling dates to proceed?

USER: I will travel on 10/05 and return on 10/07.

ASSISTANT: Do you have any other requirement?

USER: My budget for flight ticket is 5000.

ASSISTANT: Ok, we have an UA airline with flight number 1011 and price of 100 available for you. Shall I book the ticket?

USER: Sure.

ASSISTANT: Your booking is done. Thank you for choosing us.

USER: Thank you for booking.