You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I need to book a flight ticket from IAD to OAK.

ASSISTANT: Please share your travelling dates.

USER: Sure, my journey dates are Sep 9 and Sep 11.

ASSISTANT: Do you need any connection limit?

USER: I need a connected flight.

ASSISTANT: Do you need any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: Stephanie Carter here.

ASSISTANT: Sorry to inform you that, there were no flights running due to abnormal weather conditions.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for choosing us.