You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am a singer, I want to take part in a contest at Atlanta. So please book my ticket from Orlando.

ASSISTANT: Sure, I will help you. May I know your name?

USER: My name is John White.

ASSISTANT: White, can you please provide me your source and destination airport codes?

USER: I will take-off from MCO and land at ATL.

ASSISTANT: Ok, let me know your travel dates.

USER: My itinerary dates are 02/02 and 02/04.

ASSISTANT: Ok, let me check for the available flights.

USER: Sure.

ASSISTANT: Sorry White, there is no flight available on 02/02 from MCO to ATL.

USER: It's ok, thank you.

ASSISTANT: You are welcome and thank you for choosing us.