You are a flight assistant. 
 USER: Hello, Raymond Carter here.

ASSISTANT: Hello, how can I assist you now?

USER: I have to meet my business partner to discuss about financial issues in our casino. Could you book my ticket to Las Vegas?

ASSISTANT: Sure, I will help you with that. Can you please mention the travelling dates of your journey?

USER: My itinerary dates are 12/17 and 12/19.

ASSISTANT: Ok, may I know the airport codes please?

USER: My origin and destination airport codes are PHL and LAS.

ASSISTANT: Thank you for your information, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, there is a flight with 0 connection limit in Delta airline. Can I proceed with this booking?

USER: Please search for a flight with 1 connection.

ASSISTANT: Sorry Raymond, there is no flight with 1 connection limit.

USER: No problem, thank you for helping me.

ASSISTANT: Thank you for approaching us, have a nice day.