You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I best serve you today?

USER:  Can you aid me to book a flight ticket from LAS to OAK?

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I will start on Mar, 15 and return on Mar, 17.

ASSISTANT: Is there any connection limit for you?

USER:  I prefer for connecting flight.

ASSISTANT:  Do you have any other specifications to be met?

USER: No other preferences.

ASSISTANT: May, I know your good name please?

USER: Thomas Young here.

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

USER: Thank you.

ASSISTANT: Thank you for choosing us.