You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

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

ASSISTANT: Can I have your trip dates?

USER: My journey dates are 12/04 and 12/06.

ASSISTANT: Do you need any connection limit?

USER: I need break in my journey.

ASSISTANT: Do you need any other specifications?

USER: Return time should be afternoon and I am comfortable with normal cost airline.

ASSISTANT: May I know your name?

USER: Richard Evans here.

ASSISTANT: There are no flights available on your routes.

USER: No problem, thanks for the information.

ASSISTANT: Thank you for choosing us.