You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: Could you please help me in flight ticket booking process from DFW to SEA?

ASSISTANT: Sure, please share me your travel dates.

USER: Thank you for your response, I want to take off on Aug 26 and book my return ticket also on Aug 28.

ASSISTANT: May I know your specifications?

USER: I want to take off in evening time.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: Sure, my name is Brian Baker.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I am ok with any flight.

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

USER: Oh! It's ok, no problem.

ASSISTANT: Thank you for supporting us.

USER: Thank you for your information.