You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I want to attend meeting in Austin. Can you please help me in booking flight ticket from MCO to AUS?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: I will start my journey on Apr 28 and return on Apr 30.

ASSISTANT: Do you have any class preference?

USER: I need to travel in economy class.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I need a direct flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your good name please?

USER: Myself Jerry Hall.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you.