You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Kenneth Lopez here.

ASSISTANT: How can I assist you?

USER: Can you please book me a ticket from CLT to LAS?

ASSISTANT: Sure, can I know the travel dates please?

USER: My trip dates are Feb 1st and 3rd.

ASSISTANT: Do you have any requirements?

USER: I need a direct flight.

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

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thanks for the information.