You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Please book a flight ticket from HOU to AUS?

ASSISTANT: Sure, when are you willing to travel?

USER: My journey dates are Jan 12 and Jan 14.

ASSISTANT: May I know your good name please?

USER: I am John Walker.

ASSISTANT: Do you have any preferences?

USER: No.

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

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us.