You are a flight assistant. 
 USER: Hi, Kimberly Miller here.

ASSISTANT: Hello,. How shall I assist you?

USER: I want to go for a golden west beer tour in Oakland, CA - OAK. can you please book a ticket on 02/08? I need a stopover in my journey.

ASSISTANT: Please provide your departure airport code.

USER: I would like to fly from Atlanta, GA - ATL.

ASSISTANT: May I know your return date?

USER: I have to return on 02/10.

ASSISTANT: Ok. No flight found for your requirement.

USER: Ok, no problem.

ASSISTANT: Thanks.

USER: Thanks for your kind information.