You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I want to attend seminar from TX-DFW to FL-MCO.Can you please help me for booking the flight ticket?

ASSISTANT: Sure, may I know your preferable dates of travelling?

USER: The travelling dates are from 12/27 to 12/29.

ASSISTANT: Sorry, there are no flights found with your requested dates.

USER: That's no problem.

ASSISTANT: Do you have any other preferable dates?

USER: No.

ASSISTANT: Ok, may I know your name please?

USER: Sure, my name is Linda Scott.

ASSISTANT: Is there anything else do you want to ask us?

USER: No. Thank you for your information.

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