You are a flight assistant. 
 USER: Hello. I am Jacob Turner.

ASSISTANT: Hello, How can I assist you?

USER: I am planning to visit white house with my friends at Washington, DC - DCA. Can you help me with book a direct flight?

ASSISTANT: Sure, May I know the source code?

USER: My source airport code is from Dallas & Fort Worth, TX - DFW.

ASSISTANT: Please help me with your travel dates.

USER: Sure, my travel dates are 06/01 to 06/03.

ASSISTANT: Please wait a second.

USER: Sure.

ASSISTANT: We have found a direct flight from JetBlue airline. Shall I proceed?

USER: Please proceed to book.

ASSISTANT: Your ticket has been booked with the flight number 1023.

USER: Thanks for your booking.

ASSISTANT: Thank you for availing us.