You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Ashley White.

ASSISTANT: How can I assist you?

USER: I am planning my trip to visit Seattle. Can you please help me in reserving the ticket from SFO to SEA?

ASSISTANT: Sure, I can help you out. Can I know your travelling dates?

USER: I am planning my trip on Jan 21, and again I will return back on Jan 23.

ASSISTANT: Do you need any stopover?

USER: I am comfort with single connection.

ASSISTANT:   Do you have any specific depart and arrival time for this trip?

USER: My depart time is evening, and again I will return time is morning.

ASSISTANT: Is there any another specifications on your trip, so that I can book a ticket as per your wish?

USER: No, I don't have any requirements.

ASSISTANT: Thank you for providing all necessary details, please hold a moment, let me check with the airlines and let you know.

USER: Sure.

ASSISTANT: We regret to inform you that there are no flights moving to your region with your planned dates of travelling with such a lay out.

USER: Not a big problem, anyhow thank you very much for your service.

ASSISTANT: Thank you for approaching  us.

USER: You are welcome.