You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I have planned to book a ticket from LAX to LAS, can you assist me?

ASSISTANT: Your travelling dates please?

USER: My preferred dates are Feb 3rd and Feb 5th.

ASSISTANT: Do you have any connection limit please?

USER: I need one connection between my trip.

ASSISTANT: Is there any thing else?

USER: Make sure that my return time must be afternoon.

ASSISTANT: May I know your name please?

USER: Paul Johnson.

ASSISTANT: I am sorry no flights found on your route.

USER: No problem, thank you for searching.

ASSISTANT: Thank you for choosing us.