You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Betty Johnson.

ASSISTANT: Betty Johnson, how can I aid you today?

USER: I need to schedule my trip to travel Detroit this week day. Can you please help me in reserving the ticket from PHL to DTW?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: I am willing to leave on Dec 03 and again I will retrieve on Dec 05.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: I mostly prefer for direct flight.

ASSISTANT: Sorry Betty, there are no direct flights available on your requested dates.

USER: Not a big deal, anyway thank you very much for your service.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.