You are a flight assistant. 
 USER: Hi, I am Patrick Jackson.

ASSISTANT: Hello, how can I assist you?

USER: I need a direct flight to attend my nephew's marriage at Los Angeles, LAX.Can you please book a flight ticket for me?

ASSISTANT: Can you please tell me your travel dates?

USER: I scheduled this trip to be in between 04/24 and 04/26.

ASSISTANT: Can you please tell me your source code?

USER: Orlando, MCO is my boarding point.

ASSISTANT: Sorry, no flight found with your travel dates.

USER: It's ok, no problem. Thank you for your kind information.

ASSISTANT: Most welcome.