You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: Please book a ticket from IAH to SEA to go for Science festival.

ASSISTANT: Sure. Can I know your travelling dates?

USER: My travelling dates are May 19 and May 21.

ASSISTANT: Do you need any break?

USER: No, I need a direct flight.

ASSISTANT: May I know your name?

USER: Sure, I am Lisa Hill.

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

USER: Ok, Thank you.

ASSISTANT: Thank you for reaching us.