You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: Can you reserve me a ticket from DEN to PHX?

ASSISTANT: Sure, may I know the travelling dates?

USER: My journey dates are Mar 30 to Apr 01.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Are there any other specifications?

USER: I prefer business class to travel.

ASSISTANT: May I know your name?

USER: I am Mary Collins.

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

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for opting us.