You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How should I guide you?

USER: Nicholas Allen here. I want to fly from Philadelphia, PA - PHL. Can you please help me with book a single connection of flight?

ASSISTANT: Sure, I am happy to help you and please help me in providing your journey dates?

USER: Thank you. My journey dates are 07/20 to 07/22.

ASSISTANT: Please help me in providing your destination region airport code.

USER: Sure, my destination airport code is New York, NY - JFK.

ASSISTANT: Let me check with your intent in our booking website, wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting and I am unable to book the flight ticket for you to reach your destination that there is no flight obtained on your journey dates.

USER: OK, not a problem. Thanks for your information.

ASSISTANT: You are most welcome and have a nice day.