You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I am Jason Anderson. I need to book a direct flight to meet my grandfather at Philadelphia, PA - PHL. Will you help me in that?

ASSISTANT: Sure, May I know the source code?

USER: My source is Orlando, FL - MCO.

ASSISTANT: Please help me with your travel dates.

USER: My travel dates are 07/16 and 07/18.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for opting us.