You are a flight assistant. 
 USER: Hello. I am Jeffrey Rodriguez.

ASSISTANT: Hello, how can I guide you for today?

USER: Can you please book a ticket from CLT to JFK to attend for a live concert?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My travelling dates are Sept 3 and Sept 5.

ASSISTANT: Do you have any class preferences?

USER: No.

ASSISTANT: Do you have any airline preferences?

USER: No.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: My return time is afternoon.

ASSISTANT: Sorry, there are no flights available at your request.

USER: Ok, Thank you for your service.

ASSISTANT: Thank you for contacting us, have a nice day.