You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Benjamin Campbell here, can you please help me in booking the ticket from MCO to DCA? As I'm planning to visit Washington.

ASSISTANT: Sure, please share your trip dates.

USER: Sure, my planned travel dates are 07/25 and 07/27.

ASSISTANT: Please wait for a while.

USER: Sure, I'll be online.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: That's ok, thank you for giving the information.

ASSISTANT: Thank you for reaching us.