You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I would like to book a ticket from IAH to DCA, can you please help me with that?

ASSISTANT: Sure, may I know the travelling dates?

USER: The travel dates are from 10/25 to 10/27.

ASSISTANT: Do you have any connection limit?

USER: I need a flight with 1 connection limit.

ASSISTANT:  Are there any other specifications?

USER: I prefer business class.

ASSISTANT: May I know your name?

USER: Margaret Evans here.

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

USER: That's ok, thank you for your help.

ASSISTANT: Thank you for opting us.