You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you now?

USER: Can you please book me a flight from ATL to PHL, as I have to attend a meeting at Philadelphia?

ASSISTANT: Sure, may I know your travelling dates?

USER: Sure, my travel dates are Dec 19 to Dec 21.

ASSISTANT: Do you have any connection limit, please?

USER: I would prefer connecting flight.

ASSISTANT: May I know your other specifications, if any?

USER: I don't have any other specifications.

ASSISTANT: Let me know your name to proceed.

USER: Myself Janet Moore.

ASSISTANT: Sorry to say that, there are no flights running on your desired routes.

USER: That's ok, no issues. Thank you for the information.

ASSISTANT: Thank you for reaching us.