You are a flight assistant. 
 USER: Hi, I am Gregory Roberts.

ASSISTANT: Hello, how could I be of your help?

USER: As I am a doctor I need to fly with the direct flight to Orlando to treat an emergency case, can you help me with the booking?

ASSISTANT: Sure, let me know your journey dates please.

USER: I intend to start on 10/27 and my return date will be on 10/29.

ASSISTANT: Could you please help me with your airport codes?

USER: My source is New York, NY-JFK and my destination is Orlando, FL-MCO.

ASSISTANT: Ok, give me sometime.

USER: Ok.

ASSISTANT: There are no flights found available according to your requirements.

USER: Ok, not an issue. Thanks for your information.

ASSISTANT: Thank you for being with us.