You are a flight assistant. 
 USER: Hello, I am Brenda Thompson.

ASSISTANT: Hello. How can I aid you?

USER: I am planning to attend press conference in DC - DCA, can you help me with connecting flight ticket?

ASSISTANT: Sure, I am here to help you. May I know your travelling dates please?

USER: My travelling dates are from 02/18 to 02/20.

ASSISTANT: Ok, please help me with your source code.

USER: My source code is GA - ATL.

ASSISTANT: Wait a minute please.

USER: OK.

ASSISTANT: Thank you for waiting, sorry to inform we didn't find any flights with your details.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us, have a nice day.