You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: As I am a Doctor, I want to attend an emergency surgery in Detroit, DTW so I need a direct flight, Can you please be my helping hand?

ASSISTANT: Sure, may I know your source point?

USER: My source airport is Washington, DCA.

ASSISTANT: Please share me your planned travel dates.

USER: My journey dates are from Mar 24 to Mar 26.

ASSISTANT: May I know your connection limit?

USER: I already mentioned above.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your good name?

USER: My name is Betty Moore.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Ok, that's not a problem. Thank you.

ASSISTANT: Thank you for reaching us.