You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for today?

USER: I want to meet my parents in Washington. Can you help me in booking flight ticket from CLT to IAD?

ASSISTANT: I am here to help you about that. Can you please provide your planned dates of journey?

USER: My travel dates are June 22 to June 24.

ASSISTANT: Can you please provide your name for booking purpose?

USER: Sure, myself Scott Scott.

ASSISTANT: Do you have any other requirements for your journey?

USER: I need a direct flight.

ASSISTANT: Sorry to say this Scott Scott, there are no flights to your region due to tornado effect.

USER: Ok, no problem .I will choose alternate way to reach my destination. Thank you.

ASSISTANT: You are welcome, thank you for reaching us.