You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I need to book a flight ticket from IAD to LAS, Can you please help me for booking?

ASSISTANT: Sure, I am here to help you out with that. Can you please forward your journey dates that you wish to travel?

USER: I would like to travel on 12/10 to return on 12/12.

ASSISTANT: Do you prefer any way station in between journey?

USER: I need a connecting flight.

ASSISTANT: May I know your good name please?

USER: Karen Moore here.

ASSISTANT: Is there any other specifications regarding your journey?

USER: No.

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

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thanks for approaching us, wish you a great day.