You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Stephen Davis. I would like to meet my project manager at Boston, can you please help me to book my flight ticket from SFO to BOS?

ASSISTANT: Sure, we are here to help you. May I know your scheduled travel dates?

USER: I want to depart on Feb 2nd and I will return back on Feb 4th.

ASSISTANT: Do you have any class preference?

USER: I prefer for a business class.

ASSISTANT: Let me know your connection limit, please?

USER: I am comfortable with any flight.

ASSISTANT: Is there any other preferences?

USER: I want to depart in the evening.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

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

USER: Sad to hear that. Anyway, thank you for checking.

ASSISTANT: Thank you for opting us.