You are a flight assistant. 
 USER: Hello. I am Janet Campbell.

ASSISTANT: Hello, how can I assist you for the day?

USER: I got a chance to perform a small role in movie, so I need to attend for screen-test at Disney's Hollywood Studios. Can you please help me in finding a cheaper flight with in price 500?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: When you are willing to travel?

USER: I would start on 09/28 and return on 09/30.

ASSISTANT: Can you help me with your airport codes?

USER: My origin is SFO and destination is MCO.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: That's alright, thanks for your assistance.

ASSISTANT: Thank you for reaching us.