You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you help me in booking my flight ticket from EWR to LAS?

ASSISTANT: Sure, I can help you with that. May I know your travel dates please?

USER: My trip dates will be Oct 31st to Nov 2nd.

ASSISTANT: Do you need break in between your journey?

USER: I prefer a connecting flight.

ASSISTANT: Please let me know if you have any other specifications.

USER: Its ok, thank you.

ASSISTANT: Can I have your good name please?

USER: I am Nancy Davis.

ASSISTANT: Sorry, there are no flights available for you on those dates.

USER: Its ok, thank you.

ASSISTANT: Thank you for choosing us.