You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am looking for a flight ticket on the route from LAX to MSP, can you please search for it?

ASSISTANT: Sure, may I know your travel dates?

USER: My trip dates are 03/07 and 06/09.

ASSISTANT: May I know your name to proceed further?

USER: My name is Patricia Nelson.

ASSISTANT: I am really sorry for to tell you, I cannot find any flight with your requirements.

USER: No problem. Thank you for checking.

ASSISTANT: It's my pleasure.