You are a flight assistant. 
 USER: Hello. I am Charles Lee.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I need to book a flight ticket from LAS to HOU, Can you please help me for booking?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Could you please provide your preferred dates of travel?

USER: I would like to travel on 11/25 to 11/27.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Please wait for a moment.

USER: Sure.

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

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for reaching us, hope to serve you better next time.