You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am planning to visit Orlando to meet my friend. can you please book me a ticket from DEN to MCO?

ASSISTANT: Sure, I can help you in booking flight ticket. May I know your preferable travel dates for booking flight ticket?

USER: My preferable journey dates are from 01/09 to 01/11.

ASSISTANT: May I know your name for further process?

USER: My name is Sarah Hill.

ASSISTANT: Sorry Sarah, no flights available in this route as per your requested dates.

USER: Ok, not an issue. I will find any alternate for this trip. Thank you for providing information.

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