You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I would like to book a ticket from PHL to SEA. Could you book a ticket?

ASSISTANT: Sure, may I know the travelling dates?

USER: Travelling dates are from Nov, 28 to Nov, 30.

ASSISTANT: Do you have any connection limit?

USER: I would prefer direct flight.

ASSISTANT:  Are there any other specifications?

USER: I prefer business class.

ASSISTANT: May I know your name?

USER: My name is Charles Edwards.

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 opting us.