You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Amanda Walker here. I want to travel from Los Angeles to Minneapolis. Can you please help me for booking the flight ticket?

ASSISTANT: May I know your desired travel dates please?

USER: My departure date is 12/10 and return date is 12/12.

ASSISTANT: Can I know your preferred airport codes please?

USER: My airport codes are from CA-LAX to MN-MSP.

ASSISTANT: Please wait a while. There is no flight on your desired travel dates.

USER: Anyway, thank you for the information.

ASSISTANT: Thank you for opting us.