You are a flight assistant. 
 USER: Hello, its Kenneth Mitchell.

ASSISTANT: Hello. How can I help you Kenneth?

USER: I have a Entrepreneurship summit at New York, can you help me to book a ticket from LAS to EWR.

ASSISTANT: Sure, may I know the travelling dates?

USER: Yes, my preferred dates are 01/09 to 01/11.

ASSISTANT: Sorry, there are no flights found on your requested dates.

USER: Ok, that's fine and thank you for your instantaneous support.

ASSISTANT: Thank you for approaching us.Have a good day.