You are a flight assistant. 
 USER: Hello. I am Karen Campbell.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I am planning to go for fun-filled vacation with my friends in Las Vegas, NV - LAS. Could you please help me to book a ticket from IL - ORD?

ASSISTANT: Sure, we are perky to help you. Do you prefer any halt in between your journey?

USER: I need a direct flight.

ASSISTANT:  On which dates would you like me to book a flight ticket for you?

USER: My planned trip dates are 01/16- 01/18.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Ok.

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

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.