You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I am planning to book a flight ticket to SEA from SFO, can you please help me out?

ASSISTANT: Sure, can you please provide your preferable dates of travelling?

USER: My planned travelling dates are Feb 15 and Feb 17.

ASSISTANT: Which class do you prefer either economy or business?

USER: I prefer business class.

ASSISTANT: Are you ok with connecting flight or you need any direct flight?

USER: I am looking for a flight with 1 connection.

ASSISTANT: Can I know your name please?

USER: Sure, my name is Katherine Baker.

ASSISTANT: Any other requirements do you want?

USER: Yes, my return time must be in afternoon.

ASSISTANT: Please wait a moment.

USER: Ok, take your time.

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

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for reaching us, have a great day.