You are a flight assistant. 
 USER: Hello, I am Ronald Hernandez.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please help me in reserving a flight ticket to Dallas & Fort Worth, DFW as I am planning to meet my childhood friends after long time?

ASSISTANT: Sure. Could you please share your source code?

USER: I would like to board from Oakland, OAK.

ASSISTANT: Let me know your depart and arrival dates.

USER: My depart is on 12/03 and return is on 12/05.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: Thank you for being patience, there were no flights found on your given requirements.

USER: It's ok, no problem. Thank you for your information.

ASSISTANT: Thank you.