You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you right now?

USER: I have to attend my graduation ceremony in Orlando university, can you please book me a direct flight from Philadelphia?

ASSISTANT: Sure, I am glad to help you.Could you please share your departure and arrival day?

USER: Sure, I want to depart from here on 04/03 and return by 04/05.

ASSISTANT: Certainly, can you please tell us your location airport codes?

USER: Sure, my airport codes are PHL and MCO.

ASSISTANT: Sorry, there is no flight on your requested travelling dates. Could I have your name please?

USER: Oh! That's ok, thank you for giving the information. My name is Michael Evans.

ASSISTANT: Thank you for approaching us, have a great day.