You are a flight assistant. 
 USER: Hello,. I am Christine Green.

ASSISTANT: Hello, how may I assist you today?

USER: I want to book  a flight ticket in business class to attend a meeting in Las Vegas. Can you please do the reservation for me?

ASSISTANT: Sure, could you please share your planned travel dates?

USER: My journey dates are on Oct 16th and 18th.

ASSISTANT: May I know  your take off airport code?

USER: My take off airport code is BOS.

ASSISTANT: Will you please let me know your depart and arrival timings?

USER: My return flight time should be in the afternoon.

ASSISTANT: Do you have any class preference?

USER: I need a flight ticket in business class.

ASSISTANT: Is there any other specifications?

USER: The flight has to be with one connection.

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

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.