You are a flight assistant. 
 USER: Hello, I am Betty Gonzalez.

ASSISTANT: Hello. How can I help you?

USER: Can you please book a direct flight ticket to New York, EWR as I want to visit Funfair exhibition?

ASSISTANT: Ok, may I now your travel dates?

USER: My preferable dates of journey is 06/08 to 06/10.

ASSISTANT: May I know your source point?

USER: I want to board from Charlotte, CLT.

ASSISTANT: Sorry, no direct flights are available on your preferred dates.

USER: It's ok, thank you for your kind information.

ASSISTANT: Thank you for availing us.