You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be your assistance?

USER: I am Amanda Moore, I plan to visit my cousin on her birthday. Can you help to meet my cousin on 09/16. Please find a flight under price budget of 500.

ASSISTANT: Sure, on which date you want to return?

USER: On 09/18.

ASSISTANT: Please provide your location codes?

USER: I want my flight from CA-LAX to CO-DEN.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: There were no flights found with your given information. Thanks for choosing us.

USER: Ok, no problem. Thank you for helping me.