You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I want to attend a Seminar in Washington. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, Can you please provide your take off and landing airport codes?

USER: My airport codes are LAS and IAD.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My travelling dates are June 17 and June 19.

ASSISTANT: On what name, do I need to reserve your ticket?

USER: Ashley Walker.

ASSISTANT: Let me know your connection limit?

USER: I prefer single connecting flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for choosing us.