You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I have planned to book a plane ticket from ORD to LAS, can you assist me?

ASSISTANT: Sure, We are here to help you. Can I know your travelling dates?

USER: My preferred dates are May 26th and May 28th.

ASSISTANT: Do you need any break?

USER: Yes, I need single break between my trip.

ASSISTANT: May I know your name?

USER: Frank 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 searching.

ASSISTANT: Thank you for reaching us.