You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I respond to your request?

USER: Can you please book a flight ticket from DEN to CLT?

ASSISTANT: Sure, we are glad to help you. Can you please share your journey dates that you prefer to travel?

USER: Thank you. I have planned my travel  dates as Dec 30 and Jan 01.

ASSISTANT: Do you need any layover in between journey?

USER: I am looking for direct flight so please make sure that.

ASSISTANT: Ok, May I know your good name please?

USER: Sure, myself Jason Lee.

ASSISTANT: Is there any other specifications regarding your journey?

USER: No, I do not have any other specifications.

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

USER: Sure, take your time.

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

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thanks for approaching us.

USER: Most welcome.