You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

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

ASSISTANT: Sure, may I know the planned travel dates?

USER: My travelling dates are from Sep 12 - 14.

ASSISTANT: Please provide me the specifications.

USER: I prefer for direct flight.

ASSISTANT: May I know the name?

USER: George Davis.

ASSISTANT: Sorry, there are no flights are available for your desired intent.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.