You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I guide you now?

USER: I am Jeffery Gonzalez. I want to book a flight ticket from MCO to DEN. Could you help me in booking?

ASSISTANT: Sure, I can help and can you please mention your preferable travel dates?

USER: My travelling dates are from Aug 21-23.

ASSISTANT: Is there any other specifications?

USER: My depart time should be in the evening and I need connecting flight.

ASSISTANT: Please be on hold for a while.

USER: Ok.

ASSISTANT: No flights found for this search to book a flight ticket to reach your location.

USER: That's ok, no problem. Thank you.

ASSISTANT: You are welcome and have a great day.