You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: I am Sandra Mitchell. Could you help me in booking a flight ticket from New York to Orlando on 08/02?

ASSISTANT: Sure, May I know the return date?

USER: I want to return on 08/04.

ASSISTANT: Please help me with your journey codes.

USER: My source and destination airport codes are NY - LGA and FL - MCO.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.