You are a flight assistant. 
 USER: Hello, myself George Carter.

ASSISTANT: Hello Carter, how may I assist you today?

USER: I am planning to book a flight ticket to DFW from DTW, can you please do it for me?

ASSISTANT: Sure Carter, may I know your departure and arrival dates of travel please?

USER: Sure, my preferable travelling dates are 01/10 and 01/12.

ASSISTANT: Ok, wait for a moment please.

USER: Ok, take your time.

ASSISTANT: Sorry Carter, there is no flight found as per your travelling details.

USER: It's ok, thank you for the information.

ASSISTANT: You are welcome always.