You are a flight assistant. 
 USER: Hello. I am George Evans.

ASSISTANT: Hello. How can I aid you today?

USER: I want to book a flight ticket to Detroit MI-DTW, help me in reserving my flight ticket with a connecting flight.

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Could you please help me with your travelling dates?

USER: 11/21 is my starting date, my return date is on 11/23.

ASSISTANT: May I know your source code?

USER: My source point is Orlando FL-MCO.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no flights found on your requested travelling dates.

USER: Its ok, thank you.

ASSISTANT: Thank you for choosing us, have a nice day.