You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Myself Steven Brown. I am planning to visit Orlando, will you help me in booking the flight ticket from MCO?

ASSISTANT: Sure, we are here to assist you. Do you have any class preference?

USER: I am always comfortable with economy class.

ASSISTANT: During which month, you have planned to make your journey?

USER: I have planned my journey in the month of Sept.

ASSISTANT: May I know your landing airport code?

USER: I need to change my origin airport code is IAH and My Destination airport code is MCO?

ASSISTANT: Please share me your dates?

USER: My travelling dates are Sept 12 and Sept 14.

ASSISTANT: Do you need any halt in your journey?

USER: I need direct flight.

ASSISTANT: Sorry to say that, there are no flights available on your requested dates.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for opting us, have a good day.