You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you at this moment?

USER: I need to attend my friend marriage in St. Columban Catholic Church at Los Angeles. Can you please make a reservation with direct flight?

ASSISTANT: Sure, could you please share your journey dates?

USER: My journey dates are on Feb 20th, and arrival on Feb 22nd.

ASSISTANT: Kindly share your take off airport code.

USER: My take off airport code is ATL.

ASSISTANT: Do you have any class preference?

USER: No, I am ok with any class.

ASSISTANT: Is there any more specifications?

USER: No.

ASSISTANT: May I know your good name?

USER: Kevin Jones is my name.

ASSISTANT: Sorry, there are no flights available as per your requirements.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.