You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I want to travel from PHL to ATL. Can you help me to book a flight ticket?

ASSISTANT: Sure, may I know your journey dates for the trip?

USER: I want to fly in the flight on Mar 18 and Mar 20.

ASSISTANT: Do you have any limit on your maximum number of connections?

USER: I am looking for a connecting flight.

ASSISTANT: May I know your class preference for your journey?

USER: I don't have any.

ASSISTANT: Let me know your name to proceed further.

USER: Laura Jones.

ASSISTANT: Sorry for the inconvenience, there are no flights available on your routes as per your specifications.

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you for choosing us, have a good day.