You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to fly from CLT to HOU. Can you check the flight availability on this root?

ASSISTANT: May I know your travel dates.

USER: My planned travel dates are 04/17 and 04/19.

ASSISTANT: Do you want any connections?

USER: I want a direct flight only.

ASSISTANT: Are there any other specifications?

USER: I need business class only. No more specifications please.

ASSISTANT: May I know your name?

USER: Sure, Charles Wright here.

ASSISTANT: Sorry, there are no flights available with your details.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for reaching us.