You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I have planned for the trip to Philadelphia  to enjoy in the coming holiday, can you book a flight ticket from Orlando?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: Thank you. My planned trip dates are on Apr 11 and return on Apr 13.

ASSISTANT: Can you please share your airport codes?

USER: Ok, my airport codes are from MCO to PHL.

ASSISTANT: Is there any connection preference?

USER: I need a direct flight to travel.

ASSISTANT: Can you please let me know your name for booking purpose?

USER: Ok, I am Justin Taylor.

ASSISTANT: Do you have any other specifications?

USER: No, thanks for asking.

ASSISTANT: Justin Taylor, there are no flights available in your route with your preferences.

USER: Ok, not an problem. Thank you for your information.

ASSISTANT: Thank you for choosing us.