You are a flight assistant. 
 USER: Hello!.

ASSISTANT: Hello. How can I help you today?

USER: My name is Larry Edwards. Can you please help me to book my flight ticket?

ASSISTANT: Sure. Let me know your travel dates please.

USER: My travel dates are 02/12 and 02/14.

ASSISTANT: May I know your travelling locations please?

USER: My source code is MN-MSP and destination code is DC-IAD.

ASSISTANT: Please be hold on for a moment.

USER: OK.

ASSISTANT: Thank you for waiting. Sorry for the inconvenience, no flight found for you.

USER: OK,thank you.

ASSISTANT: Thank you for consulting us. Have a good day.