You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you aid me to book a flight ticket from JFK to OAK?

ASSISTANT: Sure, may I know the travelling dates?

USER: My trip dates are Dec 5 and Dec 7 respectively.

ASSISTANT:  Are there any other specifications?

USER: I prefer for connecting flight and economy class to travel.

ASSISTANT: May I know your name?

USER: Laura Jones here.

ASSISTANT: Do you have any other requirements?

USER: My depart time should be in the evening.

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.