You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me to book a flight from IAH to ORD?

ASSISTANT: Sure, may I know the travelling dates?

USER: My travel dates are Nov 27 to 29.

ASSISTANT: Do you have any connection limit?

USER: I prefer direct flight.

ASSISTANT:  Are there any other specifications?

USER: My return time should be afternoon.

ASSISTANT: May I know your name?

USER: I am Sarah Taylor.

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 opting us.