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

ASSISTANT: Hello. How may I assist you today Angela?

USER: I work in First Republic Bank in San Francisco, it is a wealth management company. I will travel to SFO on 01/15. And my Departure details will be LAX on 01/13.

ASSISTANT: Sure, may I know your return date and origin code? I am really sorry for to tell you, I cannot find any flight with your requirements.

USER: Ok, not a problem. Thanks for your information.

ASSISTANT: Thank you.