You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Can you please help me to book a flight from LAS to DFW?

ASSISTANT: When you are willing to travel?

USER: My travel dates are Oct 17 to 19.

ASSISTANT: Do you have any connection limit?

USER: I prefer connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May, I know your good name?

USER: I am Joshua Lee.

ASSISTANT: 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: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.