You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am Ashley White. I am looking for a flight from JFK to DFW, can you please help me in booking?

ASSISTANT: When you are planning to go?

USER: My travelling dates are Dec 21 and Dec 23.

ASSISTANT: May I know your connections?

USER: I need a direct flight.

ASSISTANT: Do you prefer any specifications?

USER: I prefer economy class.

ASSISTANT: Sorry, there are no flights found on your route due to abnormal weather condition.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.