You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Nancy Thompson.

ASSISTANT: How can I help you Nancy?

USER: I'm searching for a direct flight for an emergency meeting, can you please help me with it?

ASSISTANT: Sure, could you please tell me your origin and destination codes?

USER: My travelling locations are from PHL to DTW.

ASSISTANT: Ok, please tell me your planned trip dates.

USER: My travelling dates are from 09/28 and 09/30.

ASSISTANT: Nancy, no flights found as per your information.

USER: It's ok. Thank you for the information.

ASSISTANT: My pleasure.