You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: i would like to visit Orlando with my friend, please help me in booking a ticket.

ASSISTANT: Sure, may I know your travel dates?

USER: My travel dates are from 11/28 to 11/30.

ASSISTANT: May I know your airport codes please?

USER: My airport codes are from AUS to MCO.

ASSISTANT: Can I have your good name please?

USER: My name is Susan Mitchell.

ASSISTANT: Susan, there are no flights available for you on those dates.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for choosing us.