You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you please help me in booking my flight ticket from DCA to MCO?

ASSISTANT: Sure, may I know your planned trip dates?

USER: My planned trip dates are from 03/18 to 03/20.

ASSISTANT: Do you have any connection limit preference?

USER: Yes, I need a single connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Could you help me with your name please?

USER: Myself Brenda Evans.

ASSISTANT: Thank you for your details, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, regret to inform that there is no flight available for the mentioned dates.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for reaching us.