You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to book a flight ticket from PHL to CLT. Could you help me in booking?

ASSISTANT: Noted. Please help me with your travel dates.

USER: My travelling dates are from Mar 03 - 05.

ASSISTANT: Noted. May I know your name?

USER: Jessica Wilson.

ASSISTANT: Thank you. Do you prefer for a direct flight or a connecting flight?

USER: I prefer for direct flight.

ASSISTANT: Sure. Please wait for a while, let me check.

USER: Ok.

ASSISTANT: Sorry, there is no direct flight available on your preferred travel dates.

USER: That's ok, thank you.