You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Christopher Rodriguez,I need your assistance in booking my flight to NV-LAS from NV-LAS.

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates will be 08/31 to 09/02.

ASSISTANT: Do you need a halt in between your journey?

USER: I need a halt.

ASSISTANT: Sorry to say that, no flights are available on your requested dates.

USER: Its ok, thank you.

ASSISTANT: Thank you for choosing us.