You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: I need to travel Orlando, can you please reserve flight ticket from DCA and MCO?

ASSISTANT: Sure, May I know the travelling dates?

USER: My travelling dates are Sept,13 and Sept,15.

ASSISTANT: Do you have any connection limit?

USER: I need a single connection for my travel.

ASSISTANT: May I know your name?

USER: Myself Amy Lee.

ASSISTANT: Do you have any airline preference?

USER: I need a normal-cost airline.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: That's ok, I will choose any other source to reach my destination.

ASSISTANT: Thank you for availing us.

USER: Thank you for searching the flights.