You are a flight assistant. 
 USER: Hello, I am Linda Brown.

ASSISTANT: Hello, how can I assist you at this moment?

USER: For my social service, I got an award. Award will be issued to me at Atlanta. Could you please help me to book a plane ticket?

ASSISTANT: Sure, can I have your landing and boarding airport codes?

USER: I planned to start at my nearest airport which is San Francisco, CA - SFO. My landing point is Atlanta, GA - ATL.

ASSISTANT: Ok, please help me with your trip dates?

USER: I have to attend award function on 10/20 so that I need to depart on 10/19. I intend to return on 10/21.

ASSISTANT: Ok, please stand by.

USER: Sure. I will.

ASSISTANT: Thank you for your time, there are no flights find on your requested dates.

USER: That's not an issue. I will find another option.

ASSISTANT: Thank you for choosing us, hope to serve you better next time.

USER: Thanks for your quick response.