You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I oblige you today?

USER: I need a ticket from IAD to ORD. Could you book a ticket?

ASSISTANT: Sure, could I have your journey dates?

USER: Departure date is May, 14 and return by May, 16.

ASSISTANT: May I know your good name please?

USER: My name is Margaret Parker.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

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

USER: Thanks.

ASSISTANT: Thank you for opting us.