You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I am Dorothy Johnson. I need to book a direct flight to PA - PHL, can you help me to book a flight ticket?

ASSISTANT: Sure, please share your source point.

USER: My source point is DC - IAD.

ASSISTANT: Ok, may I know your journey dates?

USER: Sure, my journey dates are on 11/19 to 11/21.

ASSISTANT: Is there any halt in between your journey?

USER: I need a direct flight.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for your time, there were no flight found on that location.

USER: No problem, thanks for your support.

ASSISTANT: Thank you for reaching us.