You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what services are you seeking from us?

USER: Could you please book a flight ticket from SEA to DTW?

ASSISTANT: Sure, may I know your connection limit please?

USER: I need a single connecting flight.

ASSISTANT: Could you please ensure your preferable dates?

USER: My trip dates are Mar 07 and Mar 09.

ASSISTANT: For booking purpose I required your name, can I know your name?

USER: I am Frank Young.

ASSISTANT: Do you have any other restrictions to be met?

USER: I want to depart in the afternoon. And I prefer a normal cost airline.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for choosing us.