You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please book a flight ticket with the name of Mark Thompson to attend a seminar?

ASSISTANT: Sure, could you please help me with your journey dates?

USER: My journey dates are, depart on 12/18 and arrival on 12/20.

ASSISTANT: May I know your journey locations?

USER: My journey points are, New York, JFK to Oakland, OAK.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

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

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for connecting with us.