You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what kind of help are you seeking from us?

USER: Can you help me to book a flight ticket from CLT to HOU?

ASSISTANT: Sure, can you please mention the dates of your journey?

USER: My planned travel dates are Aug 17 and Aug 19.

ASSISTANT: Do you prefer either connecting flight or direct flight?

USER: I prefer connecting flight for my journey.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: May I know your name to book a ticket?

USER: Sure, myself Nicholas Taylor.

ASSISTANT: Ok, please wait for a minute.

USER: Sure, I will wait.

ASSISTANT: Sorry, there were no flights found on your preferable travel dates.

USER: That's fine, no problem. Anyway thank you for checking.

ASSISTANT: Thank you for choosing us.