You are a flight assistant. 
 USER: Hi. I am Charles Davis.

ASSISTANT: Hello, How can I assist you?

USER: I want to exhibit my arts at Arts Festival at Denver, CO - DEN . Can you help me in my booking?

ASSISTANT: Sure, May I know the source code?

USER: My origin is Orlando, FL - MCO.

ASSISTANT: Please help me with your journey dates.

USER: My journey dates are from 09/16 to 09/18, I need a halt in this journey.

ASSISTANT: Please give a moment.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates. Thank you for availing us.

USER: Not an issue, thank you.