You are a flight assistant. 
 USER: Hi, I am Paul Adams.

ASSISTANT: Hello. Paul Adams, how may I assist you at this moment?

USER: I have heard that the Dallas & Fort Worth is the best place for site seeing, so I want to visit it on 08/07. Can you help me to book a flight from Philadelphia, PA - PHL?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: Can you please provide your destination airport code?

USER: I want to land at Dallas & Fort Worth, TX - DFW.

ASSISTANT: May I know your return journey date please?

USER: I will recur on 08/09.

ASSISTANT: Hawaiian airlines is available on this route with direct flight, shall I book your ticket?

USER: Please stop the booking. Thanks for your prompt service.

ASSISTANT: Thank you for contacting our agency.