You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Ok, my travel dates are 12/09 and 12/11 to attend the business meeting. May I know if there is a flight available?

ASSISTANT: Sure, I will help you with this. Can you please provide your nearest airport codes of journey for a better search of flights availability?

USER: Ok, my nearest airport code is CO - DEN and destination code is MA - BOS.

ASSISTANT: Meanwhile, please provide your name.

USER: Ok, my name is Kenneth Clark.

ASSISTANT: Wait a moment please.

USER: Ok, I will wait not a problem. Please book a direct flight.

ASSISTANT: Kenneth Clark, there are no flight services available on this route with 0 connection limit.

USER: That's so sad to hear, anyways thank you for checking.

ASSISTANT: Thank you for utilising our service.