You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I would like to travel from LAS to ORD as a business trip, can you do the reservation?

ASSISTANT: Please provide your journey dates.

USER: My trip dates are 07/19 and 07/21.

ASSISTANT: Do you need any connection limit?

USER: I need break in my journey.

ASSISTANT: Do you need any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: Larry King here.

ASSISTANT: There are no flights available on your routes.

USER: No problem, thanks for the information.

ASSISTANT: Thank you for opting us.