You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I would like to book a ticket from DFW to PHL.

ASSISTANT: Sure, may I know the travelling dates?

USER: Travelling dates are from Dec, 29 to Dec, 31.

ASSISTANT: Do you have any connection limit?

USER: I would prefer connecting flight.

ASSISTANT:  Are there any other specifications?

USER: I would like to depart in the afternoon and would like to return in the afternoon.

ASSISTANT: May I know your name?

USER: I am Stephen Robinson.

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

USER: Thank you.

ASSISTANT: Thank you for availing us.