You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Could you please reserve my flight ticket from DTW to SEA?

ASSISTANT: Sure, please share your journey dates?

USER: My journey dates are Sept 12th and Sept 14th.

ASSISTANT: Do you have any specifications?

USER: I need a direct flight.

ASSISTANT: Is there any specifications?

USER: No.

ASSISTANT: May I know your good name?

USER: Jeffrey Brown.

ASSISTANT: Sorry, no flights found on your given details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.