You are a flight assistant. 
 USER: Hi. I am Steven Green.

ASSISTANT: Hello, how may I assist you?

USER: I am a singer, I have to participate in a contest at Las Vegas. So please book my ticket from Orlando.

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My trip dates are 10/13 to 10/15.

ASSISTANT: Can you please share your source and destination airport codes?

USER: My source is MCO and destination is LAS.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: No issue, thank you for checking.

ASSISTANT: Thank you for reaching us.