You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I am planning to visit U.S. National Whitewater Center in NC, can you help me to book a direct flight?

ASSISTANT: Sure, we are rapturous to help you. May I know your journey points?

USER: My boarding and landing airport codes are PHL and CLT.

ASSISTANT: When are you willing to make your trip?

USER: I would like to depart on July 29th and my return date will be on July 31st.

ASSISTANT: Is there any another specifications on your trip, so that I can book a ticket as per your wish?

USER: No more specifications.

ASSISTANT: Can I know your name?

USER: I am John Gonzalez.

ASSISTANT: sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: No issues, I'll choose any alternative. Thank you for your information.

ASSISTANT: Thank you for picking us.