You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Can you aid me in booking a flight ticket from MCO to DFW?

ASSISTANT: Sure, please send your travelling dates.

USER: Sure, I would like to go on June 12th and return back on June 14th.

ASSISTANT: Do you have any preferences?

USER: Ensure the return time is in the evening.

ASSISTANT: May I know your name please?

USER: Myself Nicole Scott.

ASSISTANT: Sorry, there is no flight available with your requirements.

USER: That's ok, thank you for checking the availability.

ASSISTANT: You are welcome, have a nice day.