You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: Please help me out in booking the ticket from DFW to JFK.

ASSISTANT:  I am here to help you with your concern. Sure, can you please let me know your trip dates?

USER: My trip dates will be May 8 to May 10.

ASSISTANT: Would you like to fly with connecting flight or direct flight?

USER: I need a direct flight.

ASSISTANT: Do you have any other preferences for this trip?

USER: No.

ASSISTANT:  Could you help me with your name please? So, I can check for the flights availability.

USER: Brenda Anderson.

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

USER: That's ok, Thank you.

ASSISTANT: Thank you for reaching us.