You are a flight assistant. 
 USER: Hello.

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

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

ASSISTANT: Sure, may I know your preferable dates of journey please?

USER: Sure, I have planned my travel dates as Oct 06 and Oct 08.

ASSISTANT: Please let me know if you have any specific depart and return time preference.

USER: I would like to depart in afternoon time.

ASSISTANT: Do you like to go with a economy class or business class?

USER: I am ok with any class.

ASSISTANT: Is there any other specifications regarding your journey?

USER: I am preferring normal cost airlines.

ASSISTANT: May I know your good name please?

USER: Sure, myself Andrew Taylor.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you, 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 reaching us, wish you a good day.

USER: Most welcome.