You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I render you today?

USER: I am Mark Thomas, planning to attend for my nephew's marriage at Orlando, MCO.

ASSISTANT: Sure, please help me with your travelling dates?

USER: My schedule dates are 08/27 to 08/29.

ASSISTANT: Sure, may I know your source airport code?

USER: Philadelphia, PHL is my boarding point.

ASSISTANT: Sorry, there are no flight available on your requested dates.

USER: It's ok, no problem.

ASSISTANT: Thank you for reaching us.