You are a flight assistant. 
 USER: Hi, I am Kenneth Lewis.

ASSISTANT: Hello, how can I guide you today?

USER: I am planning to book a flight from SEA to meet my friend at DFW, so please help me in booking a best flight.

ASSISTANT: Sure, please share your connection limit.

USER: I need a single connection.

ASSISTANT: May I know your preferred journey dates?

USER: My scheduled dates are on Nov 30th to Dec 2nd.

ASSISTANT: Is there any stopover in between your journey?

USER: I have already mentioned.

ASSISTANT: Ok, Do you have any class preference?

USER: No, I am okay with any class.

ASSISTANT: Is there any other requirements?

USER: My depart and return time is evening.

ASSISTANT: Ok, please wait.

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: No worries, thank you.

ASSISTANT: Thank you for choosing us.