You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I would like to travel from LAS to DCA as a holiday trip. Can you do the reservation?

ASSISTANT: Sure, could you share your trip dates?

USER: My journey dates are 03/09 and 03/11.

ASSISTANT: Do you need a direct flight?

USER: Yes, I need direct flight.

ASSISTANT: May I know your name for further process?

USER: Mark Hill here.

ASSISTANT: Sorry, there are no direct flights to your destination place.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for reaching us.