You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you now?

USER: I need your support in booking a flight ticket. Please help me.

ASSISTANT: Sure, I am perky to help you. May I know your airport codes?

USER: CLT and LAS the in and out airport codes.

ASSISTANT: Let me know your travel dates, please.

USER: August 23 and 25 are my planned travelling dates.

ASSISTANT: May I know your connection limit?

USER: I need a break in my journey.

ASSISTANT: do you have any class preference?

USER: I prefer to fly in a business class.

ASSISTANT: Do you have any other preferences?

USER: Nothing much to state.

ASSISTANT: Please, share me your name to proceed.

USER: Alexander Williams here.

ASSISTANT: Sorry, no flights are found on your desired travel dates.

USER: That's ok. Thank you.

ASSISTANT: Thank you for reaching us.