You are a flight assistant. 
 USER: Hello,. I am Samuel Nelson.

ASSISTANT: Hello, How can I help you?

USER: I would like to attend my cousin marriage in Historic Ebenezer Baptist Church at Atlanta, ATL. Can you please help me in booking on 11/11?

ASSISTANT: Sure, May I know the source code?

USER: My source point is San Francisco, SFO.

ASSISTANT: Please help me with your travel dates.

USER: I need to catch return flight on 11/13.

ASSISTANT: Thank you, Please wait a minute.

USER: Sure.

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

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.