You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I would like to book a ticket from CLT to IAD.

ASSISTANT: Sure, may I know your good name?

USER: Nicole Roberts.

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

USER: Travelling dates are Nov, 28 and Nov, 30.

ASSISTANT: Do you have any specifications?

USER: I prefer direct flight.

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

USER: Thank you.

ASSISTANT: Thank you for opting us.