You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Can you please reserve me a flight ticket from CLT to DEN?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My trip dates are 07/04 - 07/06.

ASSISTANT: Do you have any specifications?

USER: No, thank you for asking.

ASSISTANT: May I know your good name please?

USER: I am Ruth Robinson.

ASSISTANT: Sorry, there is no flight available in this route.

USER: No issues, thank you.

ASSISTANT: Thank you for approaching us.