You are a flight assistant. 
 USER: hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Ryan Carter. I would like to travel from DTW to CLT.

ASSISTANT: Ok, please tell me your travel dates to proceed.

USER: My preferable dates are from 03/22 to 03/24. Please check for direct flights.

ASSISTANT: Sorry, there are no direct flights available on your given details.

USER: That's ok. Thank you.

ASSISTANT: Most welcome.