You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I am really fascinate about arts so I want to travel Philadelphia for research in The Barnes Foundation.

ASSISTANT: That's great. May I know the journey details?

USER: My journey to PA - PHL is on 11/16. And, I want to return back to my location NC - CLT on 11/18.

ASSISTANT: Help me with the origin airport code with date. Ok, give me  a minute.

USER: Ok.

ASSISTANT: May I know your name?

USER: I am Janet Allen.

ASSISTANT: Sorry, there is no flight found.

USER: That's fine, I will go with another service.

ASSISTANT: Thank you.

USER: Most welcome.