You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Could you please help me to book a flight ticket from CLT to SFO?

ASSISTANT: Sure, may I know the travelling dates?

USER: My travelling dates are Sept 23 and Sept 25.

ASSISTANT: Do you have any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Are there any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: I am Donald Hernandez.

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

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for opting us.