You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Sharon Martin here.

ASSISTANT: How can I assist you today?

USER: I would like to visit Atlanta to meet my sister, please help me in booking a ticket from DTW to ATL.

ASSISTANT: Sure, I can help you with that. May I know your preferable travel dates please?

USER: My planned journey dates are 08/26 and 08/28.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

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

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for choosing us.