You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mark Robinson.

ASSISTANT: How can I help you?

USER: I am planning to visit Minneapolis, can you please direct flight from Chicago?

ASSISTANT: Sure, may I know your airport codes please?

USER: My nearest airport codes of travelling are from ORD to MSP.

ASSISTANT: Can you please provide me your travel dates?

USER: My planned dates of journey are from 02/18 to 02/20.

ASSISTANT: Sorry to inform you that there are no direct flights available on those dates.

USER: Ok, not an issue. I will find any alternate for this trip. Thank you for providing information.

ASSISTANT: Thank you for choosing us.