You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Paul Mitchell here.

ASSISTANT: How can I serve you today?

USER: I would like to prefer a direct flight for my business trip to Denver. Can you book it?

ASSISTANT: Sure, Can I have your name please?

USER: I am Paul Mitchell.

ASSISTANT: Can you share your airport codes?

USER: The airport codes are from CLT to DEN.

ASSISTANT: Kindly, mention your trip dates.

USER: The trip dates are from 24 Nov to 26 Nov.

ASSISTANT: Is there any other specifications for this trip?

USER: No.

ASSISTANT: Thank you for sharing your journey details, sorry to inform you currently no flights are running at that locations due to abnormal weather conditions.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for approaching us.