You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Alexander Hernandez here.

ASSISTANT: In which way I can aid you at this moment?

USER: Do you have any flight from CLT to HOU?

ASSISTANT: Sure, I can aid you in booking flight ticket. Could you please mention your preferable travel dates for booking flight ticket?

USER: My travel dates are 12/10 and 12/12.

ASSISTANT: Just give me a moment, I will check flight availability in this route.

USER: Sure.

ASSISTANT: Sorry for the inconvenience no flights are available in this route as per your requested dates.

USER: That's fine, thanks for your information.

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