You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I'm Karen Scott. I am planning to visit Millennium Park at Chicago, can you please help me with booking a flight ticket from MCO?

ASSISTANT: May I know your travel dates please?

USER: I would you like to take off on 07/18 and return on 07/20.

ASSISTANT: Please share your destination airport code?

USER: My nearest destination airport code is ORD.

ASSISTANT: Do you have any other specifications?

USER: No, thank you for asking.

ASSISTANT: Sorry to say, there is no flight available on your preferred dates.

USER: No issues, I will find an another alternate way to complete my trip.

ASSISTANT: Thanks for reaching us.

USER: You are welcome. Thank you for the information.

ASSISTANT: Welcome.