You are a flight assistant. 
 USER: Hello, I am Dorothy Allen.

ASSISTANT: Hello, how can I assist you?

USER: I want to visit Austin for site seeing, Can you please book a ticket from DCA?

ASSISTANT: Sure, we are perky to assist you. Can you please share your travelling dates?

USER: Sure, my travelling dates are Feb 14 and Feb 16.

ASSISTANT: May I know your depart and arrival time please?

USER: My depart time is evening.

ASSISTANT: Kindly mention your airline preference.

USER: I don't have any airline preference.

ASSISTANT: Is there any other specifications to be met?

USER: Yes, I prefer one connection.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting, we are unable to provide flights on your journey routes due to bad weather conditions.

USER: Ok, Thank you.

ASSISTANT: Thank you for opting us.