You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I am Donald Walker. I am planning to visit Central Park at New York, could you please help me with booking a flight ticket from CLT to EWR?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: I would like to depart on Aug 7th and return on Aug 9th.

ASSISTANT: Do you have any preferences?

USER: I am looking for a connecting flight.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: That's ok, not an issue. Anyways, thank you for the information.

ASSISTANT: You are welcome, have a nice day.