You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Donald Jackson.

ASSISTANT: Donald, how may I aid you today?

USER: I want to go New York for my upcoming film shooting purpose, can you please book a flight ticket from Charlotte?

ASSISTANT: Sure, may I know your airport codes?

USER: I want to take off from CLT and destination airport is EWR.

ASSISTANT: Please provide your journey dates.

USER: My departure date is 07/31 and also confirm my return ticket too on 08/02.

ASSISTANT: Could you wait for a moment?

USER: Ok.

ASSISTANT: Sorry, no flight is available on our preferred dates.

USER: Oh! It's ok no problem, I will go with another airline service.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.