You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Jonathan Edwards. Could you help me with booking ticket from LGA to LAS?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: Ok, my preferable dates are from Nov 13 to 15.

ASSISTANT: Do you have any requirements?

USER: Yes, I want to departure in the afternoon time.

ASSISTANT: May I know your connection limit?

USER: Sure, I need connecting flight.

ASSISTANT: Sorry, no flight is available for you as per your requests.

USER: It's ok, thanks for your information.

ASSISTANT: Welcome.