You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How could I serve you the best today?

USER: Will you please book me a flight ticket from JFK to DCA?

ASSISTANT: Sure, I would be happy to serve you. May I know your planned trip dates please?

USER: I will leave on July 20 and return on July 22.

ASSISTANT: Do you prefer either connecting flight or direct flight?

USER: I need 1 lay by.

ASSISTANT: Can you please share me your good name?

USER: I am Stephen Taylor.

ASSISTANT: We found a direct flight with an Southwest airline of flight 1019 in an economy class, shall I proceed with the booking?

USER: Perfect, please proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thanks for your support.

ASSISTANT: Thank you for choosing us.