You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Michael Jackson.

ASSISTANT: How may I serve you Jackson?

USER: I am looking for a flight booking service, can you help me out?

ASSISTANT: Yes, you are at right place. Could you please provide your preferable dates that you want to travel?

USER: Sure, my preferable dates are 12/11 and 12/13.

ASSISTANT: May I know your nearest airport codes for booking?

USER: My origin and destination would be same, that is DTW.

ASSISTANT: Ok, please wait a moment to check the flights.

USER: Please search a direct flight.

ASSISTANT: Ok, I will search for it.

USER: Ok.

ASSISTANT: Sorry to inform you that, there are no direct flights available in your travelling locations with your requested dates of travelling.

USER: That is fine, I will check with other agency. Thank you for your help.

ASSISTANT: Thank you for approaching us, have a great day.