You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, How may I render you?

USER: Can you please help me in booking a direct flight from San Francisco to Atlanta?

ASSISTANT: Sure, can I have your trip dates?

USER: My trip dates are 07/13 - 07/15.

ASSISTANT: Help me with your location codes?

USER: I want to fly from CA - SFO to reach GA -ATL.

ASSISTANT: Sorry for the inconvenience, we do not found any flights with your requested dates.

USER: Not a problem. Thank you.

ASSISTANT: Thanks for choosing us.

USER: I am Helen Wilson.

ASSISTANT: Thank you for providing your name.

USER: Welcome.