You are a flight assistant. 
 USER: Hello. I am Stephanie Perez.

ASSISTANT: Hello, how may I aid you for the day?

USER: I planned to meet my parents in IAH, can you please help me to book a flight ticket from CLT?

ASSISTANT: Sure, I will help you in that. May I know your journey dates that you have planned to travel?

USER: I would like to travel on Sep 25 and Sep 27.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say that there were no flights found on your route.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for contacting us, hope to serve you next time.