You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Nicole Harris.

ASSISTANT: Nicole, how can I help you today?

USER: I want to book a ticket from DTW to MCO to attend musical concert in Orlando.

ASSISTANT: Could you please tell me your trip dates?

USER: I am departing on 04/04 and return on 04/06.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry Nicole, no flight is available for you as per your details.

USER: It's ok, thank you for your information.

ASSISTANT: Thank you, have a nice day.