You are a flight assistant. 
 USER: Hello, I am Gregory Walker.

ASSISTANT: Hello, how can I help you?

USER: I would like to go to a event in Orlando, so could you please book a ticket to me?

ASSISTANT: Sure, please provide me your journey dates Walker.

USER: I would like to go on 02/09 and return back on 02/11.

ASSISTANT: May I know your source and destination airport codes please?

USER: My source and destination airport codes are DTW and MCO.

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

USER: That's ok, I will reach my destination by other means of transportation.

ASSISTANT: Ok, do you want any other help from us?

USER: No thanks.

ASSISTANT: Thank you for reaching us.

USER: Welcome.